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 5965-00-275-0491
NSN 5895-00-532-0685
NSN 5935-01-296-8748
NSN 6145-00-187-6405
NSN 5999-01-610-2024
NSN 6645-01-445-2841
NSN 6110-01-303-5196
NSN 6320-01-332-7020
NSN 7035-00-179-3924
NSN 5990-01-481-0164
NSN 5985-00-458-4309
NSN 4140-01-615-0236