O-Ring

O-rings are essential sealing components in diaphragm pumps, preventing leaks in housings, valve covers, and fluid chambers. Choosing the right O-ring material ensures longevity and chemical compatibility.

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O-Ring MaterialTemperature ResistanceChemical ResistanceAbrasion ResistanceOil ResistanceResilientApplicable Environment
PTFE-200 degrees to 260 degreesExcellent (resistant to acids, alkali, solvents and corrosive liquids)GeneralExcellentGeneralStrong acid and alkali, high temperature, high corrosive media, food and pharmaceutical industry
Nitrile-35 degrees to 120 degreesGood (oil and solvent resistance)GoodExcellentGoodOils, lubricants, chemicals, etc.
Neoprene-35 degrees to 100 degreesGood (acid, oil, ageing resistance)GoodGoodBetterModerately corrosive liquids, oils, sewage treatment, etc.
EPDM-40 degrees to 120 degreesExcellent (resistance to acids, alkalis, water, oxidation)BetterBetterBetterChemicals, wastewater treatment, Hot water, etc.
FKM/Viton-50 degrees to 250 degreesExcellent (resistance to heat, chemicals, oils)GoodExcellentGoodHigh temperature, high corrosive environment, petroleum, chemical industry, etc.

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