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 5950-01-105-7966
NSN 6145-01-442-3511
NSN 5985-01-125-6788
NSN 6110-00-803-7310
NSN 5905-00-158-5362
NSN 5905-01-312-8892
NSN 5998-01-266-1297
NSN 6130-01-290-3310
NSN 6145-00-081-2797
NSN 6130-00-525-5460
NSN 6645-00-171-9251
NSN 5965-01-015-0744