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 6110-01-461-6984
NSN 5925-00-803-5491
NSN 6240-00-893-4799
NSN 5945-01-441-0935
NSN 5920-01-066-3709
NSN 5920-01-462-2517
NSN 5990-00-660-8885
NSN 5910-01-269-2167
NSN 5915-01-573-5980
NSN 5965-01-085-6158
NSN 5975-01-304-2050
NSN 5915-00-462-3748