Find Kalrez® O-rings in Standard or Custom Sizes
Durable, heat and chemical resistant Kalrez® O-rings from select compounds are available from stock in a range of common sizes.
DuPont™ Kalrez® maintains inventories of AS-568, metric and JIS (Japanese Industry Standard), O-rings. As a result, many may be available from your local authorized Kalrez® distributor. Please refer to “Kalrez® O-rings AS568, Metric and JIS Sizes" for which we maintain an inventory, as well as custom Kalrez® O-ring specifications
The dimensions and tolerances of Kalrez® O-rings are listed and conform to AS-568. DuPont and its local authorized distributors of Kalrez® parts maintain inventories of many standard AS-568 O-rings. Actual lead times will be established at the time of the order placement. We work closely with customers to understand and meet their needs.
The dimensions and tolerances of Kalrez® O-rings in metric sizes are listed. DuPont and its local authorized Kalrez® distributors maintain certain inventories of common metric sizes but a full range of metric sizes is not normally inventoried. Actual lead times will be established at the time of the order placement. We work closely with customers to understand and meet their needs.
Many Japanese Industry Standard (JIS) O-ring sizes in compounds listed may be available for immediate shipment from your local authorized DuPont™ Kalrez® distributor’s inventory. Orders for quantities, sizes, and compounds not in inventory will be made to order. Please call your local authorized Kalrez® distributor for current inventory status and estimated shipment dates for your specific requirements. O-ring sizes not listed can be manufactured on a special order basis.
Kalrez® O-rings are also available in custom cross-section and/or diameter dimensions and tolerances. Kalrez® custom O-rings are typically made to order. Orders for quantities, sizes and compounds will be placed and processed to within standard manufacturing lead times.
Splice & Join O-rings
Kalrez® Splice & Join O-rings can be produced in a broad range of customized cross-section and diameter dimensions to meet specific needs. Cross sections are available within a range of 0.118 to 0.500" (3.00 mm to 12.70 mm) for many compounds with a minimum inside diameter of 26.000" (660.40 mm). Kalrez® Splice & Join O-rings are typically made to order. Orders for quantities, sizes and compounds will be placed and processed to within standard manufacturing lead times.
O-rings in Pressurized Water Reactor
Due to the combination of extreme temperature, pressure and chemical environments, Kalrez® 0090 was used in a series of mechanical seals employed in the operation of boiler feed pumps for pressurized water reactors.
Kalrez® O-rings for Hydrogen Sulfide Removal
Amine units for hydrogen sulfide removal (H2S) at high temperatures use elastomers like Kalrez® Spectrum™ 6380 FFKM parts for resistance to amines. 6380 helps extend MTBR of valves and pumps in amine service.
O-rings for Gas Sweetening Valves
Kalrez® 7090 perfluoroelastomer parts offer an excellent combination of chemical, Rapid Gas Decompression (RGD) resistance , and high temperature resistance for O-ring applications in gas sweetening valves that handle glycol-based solvents.
- Kalrez® Spectrum™ 6375 O-rings for PTFE replacement
- Metal O-rings Replacement
- Kalrez Spectrum 6380
- Natural Gas Sampling and Delivery