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 6610-00-991-3858
NSN 4140-01-496-4109
NSN 5998-01-235-0683
NSN 6105-01-035-7197
NSN 5925-00-757-2947
NSN 5996-00-514-7678
NSN 5835-00-498-8189
NSN 5895-01-026-1702
NSN 5965-00-335-0305
NSN 2925-01-412-9520
NSN 6135-01-531-1413
NSN 5835-01-527-2629