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 6240-01-139-3377
NSN 5905-00-763-6387
NSN 5990-01-299-2014
NSN 6135-01-423-7502
NSN 6145-01-025-1822
NSN 6130-00-142-9532
NSN 5910-01-105-1836
NSN 6320-01-585-8468
NSN 6110-01-434-2544
NSN 5835-01-160-7282
NSN 6645-01-338-1423
NSN 5985-00-270-8456