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 6650-00-170-5095
NSN 6650-01-134-3644
NSN 6145-01-109-4913
NSN 6685-01-532-2641
NSN 2925-01-133-8128
NSN 6620-00-221-6639
NSN 5985-00-475-4234
NSN 4140-00-570-3440
NSN 5960-01-221-8642
NSN 2925-01-593-2542
NSN 5935-01-113-0771
NSN 6135-01-460-8830