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 7035-00-455-7666
NSN 6645-01-275-8436
NSN 6650-00-180-6839
NSN 6610-00-832-3134
NSN 5945-00-814-7062
NSN 6150-01-388-6798
NSN 5950-01-360-8728
NSN 5925-00-216-8767
NSN 6135-01-478-9316
NSN 5945-00-296-8464
NSN 5985-01-328-5866
NSN 5990-01-124-9063