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 6645-00-946-8588
NSN 6145-00-801-4621
NSN 5975-01-056-2698
NSN 6150-01-222-0667
NSN 5965-01-462-2291
NSN 5945-01-368-2765
NSN 6645-00-460-0528
NSN 6685-00-150-0311
NSN 6320-01-415-0953
NSN 6220-01-607-8477
NSN 5905-01-240-5140
NSN 6145-00-265-6205