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 5975-01-247-4053
NSN 5965-01-542-8510
NSN 5905-00-403-2889
NSN 5910-01-317-0466
NSN 5895-00-858-5409
NSN 5905-01-540-6674
NSN 6645-01-450-4849
NSN 5996-01-088-6676
NSN 5975-01-298-1940
NSN 5905-00-915-7631
NSN 6320-01-429-9871
NSN 5985-01-134-5252