Frequently Asked Questions — EPDMC O-Rings
What is EPDMC rubber?
EPDMC is a compound-specific EPDM formulation with an optimised recipe for demanding water, steam, and sanitisation applications. The "C" suffix denotes a specific compound rather than a different base polymer. EPDMC compounds are engineered for low extractables, compliance with drinking water regulations, and improved performance in continuous hot water service.
What temperature range can EPDMC o-rings handle?
EPDMC o-rings operate from −45 °C to +160 °C in continuous water service, with specific grades rated for intermittent steam contact to +180 °C. Performance in continuous steam above 150 °C depends on the specific compound grade.
What chemicals is EPDMC resistant to?
EPDMC resists water, hot water and steam, dilute acids and alkalis, ozone, chlorinated water (potable and pool water), ketones, DOT brake fluids, and food cleaning agents (CIP chemicals). Like standard EPDM, it is entirely incompatible with petroleum oils, fuels, and aromatic or chlorinated solvents.
What are typical applications for EPDMC o-rings?
EPDMC o-rings are used in drinking water supply systems (compliant with WRAS, KTW, ACS, and NSF/ANSI 61), domestic and commercial hot water heating, industrial steam and condensate lines, food and beverage CIP equipment, and pharmaceutical purified water and WFI systems where low extractables are specified.