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 6145-01-420-9289
NSN 6150-01-508-6663
NSN 6645-01-396-4223
NSN 6135-01-622-1296
NSN 2925-01-157-9204
NSN 6685-00-909-9768
NSN 5925-01-359-4814
NSN 5835-00-138-5772
NSN 6135-00-937-4118
NSN 5960-01-023-8800
NSN 5965-01-578-3522
NSN 5905-01-589-2113