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 5910-01-084-5951
NSN 6135-00-097-8162
NSN 5925-00-156-4044
NSN 5925-00-544-5980
NSN 4140-01-585-6122
NSN 7035-00-616-4410
NSN 5945-01-604-8977
NSN 7035-00-631-3782
NSN 2925-01-597-9541
NSN 6685-00-486-5150
NSN 5990-01-333-2294
NSN 5985-00-801-9514