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 5835-00-943-2763
NSN 6135-01-463-2445
NSN 6220-01-120-6398
NSN 2925-01-110-1467
NSN 6685-01-577-2066
NSN 6620-01-364-7461
NSN 6650-01-441-1258
NSN 5985-01-211-0079
NSN 5985-01-103-3579
NSN 6645-01-290-9428
NSN 6650-01-202-0596
NSN 6240-01-522-7847