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 5996-01-425-1455
NSN 5855-01-536-6134
NSN 7035-01-516-2655
NSN 5945-01-055-3571
NSN 6240-01-440-4632
NSN 6145-00-412-1292
NSN 5910-01-038-7911
NSN 5930-01-379-5074
NSN 2925-01-294-9823
NSN 4140-01-381-0099
NSN 5910-01-456-7102
NSN 5996-01-545-5216