Sparex source: https://us.sparex.com/o-ring-3-32-x-1-1-16-bs121-70-shore-4593.html Product: O Ring 3/32'' X 1 1/16'' (bs121) 70 Shore - Sparex S.4593 SKU: S.4593 Listing note: Material: Nitrile Rubber 70° shore hardness. For general use at temperatures: -40°C to +135°C. Detail enrichment pending: OEM cross references, fitment, catalog pages, and full specifications.