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 5925-01-245-2596
NSN 6610-01-172-0897
NSN 5990-01-507-7495
NSN 5950-00-497-5805
NSN 6645-01-619-0524
NSN 5975-01-079-8939
NSN 5910-01-248-5901
NSN 7035-01-045-7202
NSN 5950-00-788-4961
NSN 5930-00-596-4523
NSN 5996-00-829-2025
NSN 6145-01-501-6548