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 5998-00-284-1090
NSN 6110-00-170-6520
NSN 5925-01-321-7184
NSN 5895-00-079-1314
NSN 4140-01-011-6205
NSN 5905-00-707-5032
NSN 6685-00-477-2892
NSN 5855-00-411-8688
NSN 4140-00-727-3731
NSN 2925-01-531-9550
NSN 6135-01-529-0122
NSN 5965-00-543-1837