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 5985-01-211-9834
NSN 5945-00-838-1922
NSN 7035-01-592-4412
NSN 5920-00-170-4247
NSN 6610-00-983-4482
NSN 6150-00-269-8447
NSN 6610-01-351-4607
NSN 5855-01-302-9778
NSN 5835-01-642-4705
NSN 5985-00-334-9245
NSN 6645-01-616-4170
NSN 5930-01-275-3010