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 5935-01-495-1317
NSN 6320-01-425-1417
NSN 6110-01-310-9526
NSN 6650-01-020-6148
NSN 5990-00-059-3449
NSN 6145-00-345-2565
NSN 5925-01-338-7939
NSN 4140-01-136-0169
NSN 4140-01-056-3654
NSN 5905-01-303-5617
NSN 6645-01-385-7033
NSN 5925-01-099-8817