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 5975-01-310-3518
NSN 6105-01-524-2862
NSN 5945-01-625-8238
NSN 6135-01-275-1363
NSN 6620-01-595-4691
NSN 5999-00-879-0086
NSN 5895-00-227-4752
NSN 6130-01-383-2918
NSN 7035-01-521-6177
NSN 7035-01-570-2019
NSN 7035-01-388-6943
NSN 2925-01-577-9269