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 2925-01-025-0082
NSN 6620-01-406-3584
NSN 6145-01-596-7027
NSN 6150-00-832-6956
NSN 7035-00-009-8705
NSN 6620-00-852-0568
NSN 5996-00-945-0383
NSN 5925-01-500-5407
NSN 6685-01-318-6540
NSN 5855-01-436-2862
NSN 5895-01-332-3931
NSN 4140-01-384-2351