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Call Now: 716-759-3344 Home Products About News Technical Contact Employment Home » Technical » O-Ring Shelf Life SHELF LIFE GUIDELINE These numbers represent average shelf life under normal dry/cool storage conditions, away from direct sun / UV rays, and should be used for guidance/reference purposes only. If the shelf life has expired, products should be carefully evaluated for possible use as originally intended before discarding products solely based on the suggested shelf life. Shelf life (or life span) varies depending on product specifications and compound design. Shelf Life Guideline [PDF] Material ASTM Abbreviation Shelf Life Aflas® 20 Years Butyl Rubber, Isobutylene Isoprene IIR 20 Years Chemraz: 504, 505, 514, 526 CHEM 20 Years Chloroprene (Neoprene®) CR 15 Years Compressed Non-Asbestos Sheet Products 5 Years Cork 2 Years Cork & Rubber 5 Years Epichlorohydrin (Hydrin®) ECO 7 Years Ethylene Acrylic (Vamac®) AEM 10 Years Ethylene Propylene, EPDM or EP EP 20 Years Felt 5 Years Fiberglass 10 Years Fluorocarbon (Viton®) FKM 20 Years Fluorsilicone FVMQ 20 Years Graphoil Unlimited Gum Rubber 3 Years Gylon 20 Years Hydrogenated Nitrile, HNBR or HSN HNBR 15 Years Hypalon 5 Years Nitrile (Buna-N or NBR) NBR 20 Years Nylon 5 Years Polyacrylate ACM 15 Years Polyurethane (Polyester or Polyether) AU / EU 5 Years Polypropylene 5 Years Poron 5 Years Poron Foam Tape & ThinStik products 2 Years Silicone VMQ 20 Years Styrene Butadiene (Buna-S) SBR 5 Years TEFLON™, trademark owned by The Chemours Company VTFE 20 Years Vellumoid 5 Years Seal & Design Company Info Locations Headquarters: Clarence, NY (716) 759-3344 Info@SealAndDesign.com Higbee Division: Syracuse, NY (315) 432-8021 HB.Info@SealAndDesign.com Seal & Design Canada: Toronto, Ontario (416) 741-7005 Toll-Free: 1-866-242-3770 ca.Gasket@SealAndDesign.com Tools & Support About Seal & Design Contact Us Locations Employment Quality World-Class Products O-Rings Gaskets Seals Molded Products Vapor Membranes EMI/RFI Loctite Thermal Material Product Info Technical Info Additional Resources Supplier Portal Orders Portal Outlook Online Employee Password Reset © Seal & Design Inc. All Rights Reserved