Sparex source: https://us.sparex.com/o-ring-3-32-x-1-2-bs112-70-shore-1918.html Product: O Ring 3/32'' X 1/2'' (bs112) 70 Shore - Sparex S.1918 SKU: S.1918 Listing note: O'Ring - 3/32x 1/2 (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.