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 6685-01-497-3763
NSN 5960-01-177-7406
NSN 5965-00-333-3359
NSN 2925-00-934-8383
NSN 7035-00-275-5604
NSN 5945-01-440-1185
NSN 5998-01-608-5807
NSN 5960-01-189-5712
NSN 5895-01-396-3979
NSN 5910-01-481-4199
NSN 5985-01-335-0388
NSN 4140-01-572-3807