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 6135-00-885-6003
NSN 6610-01-371-3006
NSN 6220-00-173-7200
NSN 2925-01-063-7876
NSN 5925-01-508-4690
NSN 6135-01-308-5688
NSN 7035-01-368-0841
NSN 5950-00-939-8067
NSN 5990-01-563-1554
NSN 5975-00-233-6301
NSN 5965-01-585-9939
NSN 5925-01-108-8059