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 5960-01-609-6565
NSN 5855-01-236-9645
NSN 5998-00-219-4186
NSN 5960-01-170-4057
NSN 4140-01-321-1278
NSN 5996-01-227-3005
NSN 6220-01-326-7204
NSN 5895-00-689-6293
NSN 5965-01-222-8894
NSN 5985-01-483-8685
NSN 6685-01-546-0132
NSN 5960-01-411-5899