Chemically Inert O-Ring Seals for Laboratory Applications

FKM (fluoroelastomer), EPDM, and HNBR rubber seals are the most widely used chemically resistant options. FKM handles fuels, hydraulic fluids, and many acids; EPDM is preferred for water-based chemicals, steam, and polar solvents; HNBR offers improved resistance to oils and mild chemicals. Each compound's suitability should be verified against specific chemical contact conditions and operating temperatures.

Standard chemically resistant O-rings from Detroit Sealing Components operate from -26°C to 125°C. Specialty FKM compounds can extend performance to higher temperatures, while EPDM grades provide reliable service across broader thermal ranges. Always confirm the compound's rated temperature window against your process conditions to ensure long-term seal integrity.

DSC stocks standard sizes from 0.5 mm ID × 0.4 mm CS up to 1,600 mm ID × 50 mm CS across AS 568, BS 4518, JIS B2401, Metric, and other international standards. For laboratory applications requiring non-standard dimensions, the Infinite Size O-Ring program provides unlimited inner diameters through continuous molding with no tooling investment required.

Yes. Detroit Sealing Components operates an ISO 17025 accredited laboratory that supports custom material development and testing. Engineers can formulate and validate elastomer compounds against your specific chemical, temperature, and pressure conditions, providing CPK/PPK quality data to confirm suitability before production orders are placed.

Yes. FKM and EPDM O-rings in compliant formulations are commonly used in healthcare equipment and laboratory fluid handling. DSC supplies O-rings meeting relevant regulatory specifications and can provide certified compounds for medical-grade applications. Confirm specific compliance requirements with our technical team when placing an inquiry.

Start by identifying the chemicals the seal will contact, the operating temperature range, and whether the application is static or dynamic. FKM is the default choice for broad chemical inertness; EPDM suits steam and polar solvents; NBR and HNBR work for petroleum-based media. DSC's technical team offers application-specific guidance to confirm the optimal compound and dimensional specification for your setup.