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 5950-00-564-5749
NSN 6645-00-163-3084
NSN 5855-01-539-4296
NSN 5950-01-142-4965
NSN 5975-01-062-1435
NSN 5915-00-590-8143
NSN 6135-01-033-5052
NSN 6650-00-186-5966
NSN 5915-01-041-9188
NSN 5915-01-243-6682
NSN 5895-01-132-8365
NSN 6150-01-335-2456