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 5905-01-368-8772
NSN 5935-01-422-2927
NSN 5935-01-086-1140
NSN 5975-01-578-6071
NSN 6685-01-577-4866
NSN 6650-00-754-2276
NSN 5855-01-463-9401
NSN 6145-00-959-7610
NSN 5985-01-313-9958
NSN 5935-00-642-5473
NSN 5996-01-188-8792
NSN 6645-01-367-9736