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 5960-00-351-4821
NSN 7035-01-631-7017
NSN 5960-01-331-3817
NSN 5999-00-205-0918
NSN 5855-00-973-5717
NSN 6240-00-450-0675
NSN 6610-01-436-2803
NSN 5930-00-292-0520
NSN 6110-01-147-2487
NSN 7035-01-483-7824
NSN 6645-00-369-4410
NSN 5960-01-426-4242