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 5925-01-125-5078
NSN 5910-00-798-8792
NSN 5999-00-145-3878
NSN 5985-01-275-0846
NSN 6220-01-106-5433
NSN 4140-01-111-8297
NSN 6145-01-444-3548
NSN 5965-01-568-2681
NSN 5905-01-069-6029
NSN 6645-01-347-0450
NSN 6620-01-565-2341
NSN 5835-01-495-0595