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 5965-00-630-7872
NSN 5835-01-574-0080
NSN 5905-00-269-3374
NSN 5999-00-821-7377
NSN 5985-00-949-5691
NSN 5925-00-297-8821
NSN 5895-01-429-9305
NSN 4140-01-050-9194
NSN 6220-00-393-4222
NSN 5975-00-852-9046
NSN 6645-01-500-0827
NSN 5930-01-614-6025