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 5925-01-543-4984
NSN 6145-01-113-8205
NSN 6220-01-104-5604
NSN 5835-01-128-9331
NSN 6220-00-165-1509
NSN 2925-00-265-7539
NSN 5965-00-989-9345
NSN 5975-00-830-7638
NSN 5925-01-064-9884
NSN 6135-01-265-1384
NSN 6240-01-361-8797
NSN 5930-01-283-2507