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 6150-01-545-3589
NSN 6240-00-364-0850
NSN 5905-01-235-6851
NSN 6240-01-463-3132
NSN 6685-01-335-0397
NSN 6240-01-603-7326
NSN 5996-00-491-3469
NSN 6145-01-327-9465
NSN 6645-00-684-3424
NSN 6105-01-218-3699
NSN 5965-01-464-6225
NSN 6685-01-218-5258