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 5975-00-458-3038
NSN 5960-00-275-7497
NSN 5965-00-110-3330
NSN 6135-00-221-4720
NSN 5950-00-840-8335
NSN 5855-01-491-3604
NSN 6135-01-400-2947
NSN 5996-01-444-3915
NSN 5915-00-461-2236
NSN 5965-00-938-2814
NSN 6220-01-303-9442
NSN 5910-00-751-9581