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 5950-01-130-5397
NSN 6620-01-412-0938
NSN 5835-01-382-4592
NSN 5990-00-206-3753
NSN 6135-01-397-6564
NSN 7035-01-202-8699
NSN 5965-00-289-6280
NSN 5930-00-564-5296
NSN 5920-01-426-8517
NSN 6145-01-338-5671
NSN 5996-01-250-3912
NSN 5920-00-983-8630