A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Gaskets,washers & other seals
NSN 5990-00-513-5328
NSN 6685-01-040-2238
NSN 5930-00-438-8589
NSN 5935-01-575-4747
NSN 5910-00-865-3472
NSN 5990-00-281-4164
NSN 5895-01-536-0203
NSN 5985-00-824-6087
NSN 6645-00-382-8994
NSN 5925-01-359-5532
NSN 5965-00-236-0016
NSN 5935-01-562-9285