{"id":29386,"date":"2024-02-20T11:56:33","date_gmt":"2024-02-20T10:56:33","guid":{"rendered":"https:\/\/nh-oring.de\/?p=29386"},"modified":"2025-05-07T12:08:13","modified_gmt":"2025-05-07T10:08:13","slug":"flange-gasket-5","status":"publish","type":"post","link":"https:\/\/nh-oring.de\/en\/flange-gasket-5\/","title":{"rendered":"10 questions: O-ring production"},"content":{"rendered":"\t\t
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10 questions: O-RING HERstellung<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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TABLE OF CONTENTS<\/a><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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#1<\/span> How are O-rings manufactured step by step?<\/a><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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#2<\/span> How are additives in O-ring compounds defined?<\/a><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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#3<\/span> What are the processes for manufacturing O-rings?<\/a><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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#4<\/span> How is the black color of O-rings created?<\/a><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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#5<\/span> How does an O-ring fulfill the most important quality criteria?<\/a><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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#6<\/span> How is deburring carried out on O-rings?<\/a><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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#7<\/span> How does an O-ring fulfill the REACH and ROHS requirements?<\/a><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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#8<\/span> How do you test the durability and performance of O-rings?<\/a><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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#9<\/span> How do temperature and vulcanization time affect O-rings?<\/a><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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#10<\/span> How does UV light affect O-ring materials?<\/a><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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#1<\/span> How are O-rings manufactured step by step?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Material selection and mixing<\/strong>
First, the base elastomer suitable for the specific application of the O-ring is selected. Fillers, vulcanizing agents, anti-ageing agents and other additives are then mixed with this elastomer to achieve the desired physical properties. <\/p>\n

Shaping<\/strong>
The mixture is shaped into the specific O-ring shape either by compression, transfer or injection molding. In compression molding, the compound is filled into a pre-heated mold and vulcanized under pressure. Transfer molding and injection molding use a similar approach, but with different methods of introducing the rubber into the mold. <\/p>\n

Vulcanization<\/strong>
During this step, the mould is heated, which causes the chemical cross-links between the polymer chains to form. This process gives the O-ring its final properties such as elasticity and strength. <\/p>\n

Post-processing<\/strong>
After vulcanization, the O-rings are removed from the mould and post-processing follows. This can include deburring (removal of excess material), washing and testing the O-rings for quality standards. <\/p>\n

Quality control<\/strong>
The finished O-rings undergo various tests to ensure that they meet the specifications. These include dimensional tests, hardness tests and, in some cases, specific functional tests. <\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Step<\/th>\nStep description<\/th>\nTools\/materials<\/th>\nImportance<\/th>\n<\/tr>\n<\/thead>\n
Mixture<\/td>\nMixing rubber types and additives<\/td>\nMixer<\/td>\nBasis for quality<\/td>\n<\/tr>\n
Shaping<\/td>\nPressing the mixture into shape<\/td>\nPress molds<\/td>\nDetermines size\/shape<\/td>\n<\/tr>\n
Vulcanization<\/td>\nCuring by heat\/pressure<\/td>\nVulcanizing press<\/td>\nSecures properties<\/td>\n<\/tr>\n
Deburring<\/td>\nRemove excess material<\/td>\nDeburring tools<\/td>\nImproves surface finish<\/td>\n<\/tr>\n
Quality inspection<\/td>\nTesting for standards<\/td>\nMeasuring instruments<\/td>\nEnsures quality<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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REQUEST O-RINGS QUICKLY AND EASILY?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Almost any dimension available<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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Offer received in record time<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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No minimum order quantities or minimum item values<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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One contact for all concerns<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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#2<\/span> How are additives in O-ring compounds defined?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Additives in O-ring compounds are special chemicals that are added to the rubber compound to improve certain properties such as elasticity, heat resistance, chemical resistance or color. <\/p>\n

These can include fillers, plasticizers, anti-ageing agents, vulcanization accelerators and colour pigments. The exact composition depends on the desired application and performance of the O-ring. <\/p>\n

The selection and dosage of additives is crucial for the quality and performance of the finished O-ring.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Additive<\/th>\nFunction<\/th>\nExample of<\/th>\nImportance<\/th>\n<\/tr>\n<\/thead>\n
Fillers<\/td>\nReinforce the mixture<\/td>\nCarbon black, chalk<\/td>\nDetermines strength<\/td>\n<\/tr>\n
Plasticizer<\/td>\nIncrease flexibility<\/td>\nPhthalates<\/td>\nInfluences elasticity<\/td>\n<\/tr>\n
Anti-ageing agent<\/td>\nProtection against weathering<\/td>\nAntioxidants<\/td>\nExtends service life<\/td>\n<\/tr>\n
Vulcanization accelerator<\/td>\nAccelerates vulcanization<\/td>\nSulfur compounds<\/td>\nControls curing time<\/td>\n<\/tr>\n
Color pigments<\/td>\nColors the O-ring<\/td>\nTitanium dioxide (white)<\/td>\nFor specific applications<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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#3<\/span> What are the processes for manufacturing O-rings?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Compression method (compression shaping)<\/h3>\n

The compression process, also known as compression molding, is one of the oldest and simplest methods of manufacturing O-rings and other rubber-like products. <\/p>\n

The prepared rubber compound is placed directly into a two-part mold that has the desired shape of the O-ring. When the mould is closed, the rubber compound is vulcanized under heat and pressure, causing it to harden and take on the shape of the cavity. <\/p>\n

Injection molding (injection molding)<\/h3>\n

During injection molding, the rubber compound is injected into a closed mold under high pressure and heat. This process enables very precise control over the shape and size of the O-ring and is particularly suitable for mass production or for O-rings with complex geometries. <\/p>\n

Injection molding is more efficient than compression molding because it requires less rework and ensures greater product consistency.<\/p>\n

Impact vulcanization<\/h3>\n

Impact vulcanization is a special process that is mainly used to produce large or unusually shaped O-rings that cannot be formed in one piece. <\/p>\n

In this process, the ends of a preformed rubber strip are joined together and vulcanized using heat and pressure to create a permanent bond. This process is often used in the manufacture of O-rings for special industrial applications where standard sizes are not suitable. <\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Procedure<\/th>\nWhen to use<\/th>\nAdvantage<\/th>\n<\/tr>\n<\/thead>\n
Compression process<\/td>\nFor simple to medium-complex O-ring geometries and small to medium series<\/td>\nCost-effective for smaller series; good control over material filling and properties<\/td>\n<\/tr>\n
Injection molding<\/td>\nFor complex geometries and large series<\/td>\nHigh precision and reproducibility; efficient in mass production; minimizes material waste<\/td>\n<\/tr>\n
Impact vulcanization<\/td>\nFor large or specially shaped O-rings that cannot be produced as a continuous ring<\/td>\nEnables the production of O-rings in almost any size; flexible for special shape requirements<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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#4<\/span> How is the black color of O-rings created?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Many O-rings are black as standard because carbon black is used as a filler, which improves the mechanical properties and increases UV and ozone resistance. <\/p>\n

Carbon black is a cost-effective, efficient booster that improves the service life and performance of O-rings under various operating conditions. <\/p>\n

It also gives the rubber a uniform color and improves heat dissipation, which is particularly beneficial in applications with high temperatures.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Property<\/th>\nInfluence of carbon black<\/th>\nAdvantage<\/th>\n<\/tr>\n<\/thead>\n
Mechanical properties<\/td>\nImprovement<\/td>\nIncreased strength and durability<\/td>\n<\/tr>\n
UV and ozone resistance<\/td>\nIncrease<\/td>\nExtended service life in harsh environments<\/td>\n<\/tr>\n
Heat dissipation<\/td>\nImprovement<\/td>\nBetter performance at high temperatures<\/td>\n<\/tr>\n
Cost efficient<\/td>\nCost-efficient<\/td>\nEconomically advantageous for production<\/td>\n<\/tr>\n
Color<\/td>\nUniform black color<\/td>\nConsistent appearance<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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#5<\/span> How does an O-ring fulfill the most important quality criteria?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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An O-ring must fulfill various quality criteria in order to guarantee its function and reliability in applications. <\/p>\n

This includes dimensional accuracy, material resistance to media and temperatures, degree of hardness as well as compression and elongation properties. Compliance with industry standards and specifications, such as ASTM or ISO, is also crucial. <\/p>\n

In addition, O-rings must be inspected for surface defects, cracks and other manufacturing defects to ensure high performance and longevity in their specific application environment.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Criterion<\/th>\nCriterion Description<\/th>\nTest procedure<\/th>\n<\/tr>\n<\/thead>\n
Dimensional accuracy<\/td>\nConformity with specified dimensions<\/td>\nMeasuring gauges, micrometers<\/td>\n<\/tr>\n
Material resistance<\/td>\nResistance to media\/temperatures<\/td>\nChemical\/thermal tests<\/td>\n<\/tr>\n
Degree of hardness<\/td>\nDetermination of material hardness<\/td>\nShore hardness test<\/td>\n<\/tr>\n
Compression and elongation properties<\/td>\nBehavior under load<\/td>\nTensile and compression tests<\/td>\n<\/tr>\n
Industry standards<\/td>\nCompliance with specific standards<\/td>\nASTM, ISO certifications<\/td>\n<\/tr>\n
Surface defects<\/td>\nFree of cracks and defects<\/td>\nVisual inspection<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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#6<\/span> How is deburring carried out on O-rings?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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O-rings are deburred using various processes to remove excess material after vulcanization and achieve a smooth surface. <\/p>\n

Common methods include manual trimming, cryogenic deburring, where burrs are made brittle and removed by applying cold, and drum deburring, where O-rings are rotated in drums with abrasives to remove burrs. <\/p>\n

Each method has its specific advantages, depending on the material and requirements of the O-ring.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Method<\/th>\nMethod Description<\/th>\nAdvantages<\/th>\n<\/tr>\n<\/thead>\n
Manual trimming<\/td>\nRemoval of burrs with tools<\/td>\nPrecise control<\/td>\n<\/tr>\n
Cryogenic deburring<\/td>\nUse of cold to remove burrs<\/td>\nEffective for hard materials<\/td>\n<\/tr>\n
Drum deburring<\/td>\nGrinding in a drum<\/td>\nUniform surface<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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#7<\/span> How does an O-ring fulfill the REACH and ROHS requirements?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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For an O-ring to comply with REACH and ROHS, it must not contain certain harmful substances. REACH restricts the use of certain chemicals that are considered harmful to health or the environment. <\/p>\n

ROHS sets limits for the use of hazardous substances in electrical and electronic equipment, including lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls (PBB) and polybrominated diphenyl ethers (PBDE). <\/p>\n

Compliance with these regulations ensures that O-rings can be used safely in applications.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Regulation<\/th>\nRestricted substances<\/th>\nApplication<\/th>\n<\/tr>\n<\/thead>\n
REACH<\/td>\nSpecific chemicals<\/td>\nGeneral products<\/td>\n<\/tr>\n
ROHS<\/td>\nLead, mercury, cadmium, etc.<\/td>\nElectronics<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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#8<\/span> How do you test the durability and performance of O-rings?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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The durability and performance of O-rings is tested through various tests, including tensile strength tests, hardness tests, ageing tests under heat and ozone, as well as media resistance tests against various chemicals and liquids. <\/p>\n

These tests simulate long-term operating conditions to ensure that the O-rings meet the specified requirements for their operating environment. <\/p>\n

The results help to evaluate the service life and reliability of O-rings in their intended application.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Test type<\/th>\nTest description<\/th>\nPurpose<\/th>\n<\/tr>\n<\/thead>\n
Tensile strength<\/td>\nMeasures the force until breakage<\/td>\nEvaluation of mechanical strength<\/td>\n<\/tr>\n
Hardness test<\/td>\nDetermines the material hardness<\/td>\nAssessment of elasticity<\/td>\n<\/tr>\n
Ageing tests<\/td>\nExposure to heat\/ozone<\/td>\nPrediction of service life<\/td>\n<\/tr>\n
Media resistance<\/td>\nContact with chemicals\/liquids<\/td>\nChecking the chemical resistance<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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#9<\/span> How do temperature and vulcanization time affect O-rings?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Temperature and vulcanization time have a significant influence on the physical properties of O-rings. <\/p>\n

Higher temperatures accelerate vulcanization, which leads to faster curing, but can also result in the risk of overcuring, which makes the O-ring brittle. If the vulcanization time is too short, the O-ring may not cure completely, which impairs its mechanical strength and elasticity. <\/p>\n

The optimum combination of temperature and time is crucial for achieving the desired properties.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Factor<\/th>\nInfluence<\/th>\nOptimal condition<\/th>\n<\/tr>\n<\/thead>\n
Temperature<\/td>\nAccelerates vulcanization<\/td>\nCheck carefully<\/td>\n<\/tr>\n
Vulcanization time<\/td>\nDetermines degree of curing<\/td>\nExact compliance<\/td>\n<\/tr>\n
Overhardening<\/td>\nMakes O-ring brittle<\/td>\nAvoid<\/td>\n<\/tr>\n
Underhardening<\/td>\nImpairs strength\/elasticity<\/td>\nAvoid<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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#10<\/span> How do you recycle O-ring materials?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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The recycling of O-ring materials requires special processes to separate and reuse the elastomers. <\/p>\n

Mechanical recycling involves shredding and grinding the O-rings into granulate, which is used as a filling material in new products. <\/p>\n

Chemical recycling uses pyrolysis or hydrolysis to convert the polymers back into their monomeric components, which can then be used to synthesize new polymers. These methods help to conserve resources and reduce waste. <\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Method<\/strong><\/th>\nMethod Description<\/strong><\/th>\nAdvantages<\/strong><\/th>\nDisadvantages<\/strong><\/th>\n<\/tr>\n<\/thead>\n
Mechanical recycling<\/td>\nShredding and grinding into granulate<\/td>\nSimple and cost-effective<\/td>\nLimited purity<\/td>\n<\/tr>\n
Chemical recycling<\/td>\nRecycling into monomeric components<\/td>\nHigh purity possible<\/td>\nTechnically more complex<\/td>\n<\/tr>\n
Energy recovery<\/td>\nCombustion for energy generation<\/td>\nEnergy production<\/td>\nNon-sustainable<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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“I am convinced that we should share our knowledge with the world. I hope I have been able to answer all your questions. If you have any further questions, please feel free to contact us at any time. We will be happy to help you.”<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Lord of the O-rings Author of the Sealing Academy <\/p>\n\t\t\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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OUR O-RING BESTSELLERS<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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\n\t\t\t\t\t\tFFKM\t\t\t\t\t<\/h3>\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t
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\n\t\t\t\t\tECOLAST\u00ae\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t\t<\/a>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t
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\n\t\t\t\t\t\tFKM\t\t\t\t\t<\/h3>\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t
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\n\t\t\t\t\t\tFEP\/PFA\t\t\t\t\t<\/h3>\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"

In this short article, we answer the 10 most important questions about the manufacture of O-rings in a simple and understandable way.<\/p>\n","protected":false},"author":1,"featured_media":28103,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"elementor_header_footer","format":"standard","meta":{"footnotes":""},"categories":[66,75],"tags":[],"class_list":["post-29386","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-design","category-faq-en"],"yoast_head":"\n10 questions about O-ring production | Simply explained<\/title>\n<meta name=\"description\" content=\"We answer the 10 most important questions about O-ring production \u2705 Questions + answer \u2705 Simply explained \u2705 Click here!\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/nh-oring.de\/en\/flange-gasket-5\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"10 questions about O-ring production | Simply explained\" \/>\n<meta property=\"og:description\" content=\"We answer the 10 most important questions about O-ring production \u2705 Questions + answer \u2705 Simply explained \u2705 Click here!\" \/>\n<meta property=\"og:url\" content=\"https:\/\/nh-oring.de\/en\/flange-gasket-5\/\" \/>\n<meta property=\"og:site_name\" content=\"NH O-RING - 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