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 5975-01-032-5109
NSN 2925-00-728-8118
NSN 5925-00-536-4444
NSN 5990-00-678-3351
NSN 5915-01-319-5134
NSN 4140-00-126-4685
NSN 5990-01-386-8051
NSN 6220-01-235-3891
NSN 5935-01-119-8043
NSN 6220-01-196-5969
NSN 5998-00-185-5049
NSN 5935-01-592-3057