3/8 ID x 1-3/16 Inch OD 304, 20 Gauge Stainless Steel Sealing Washer with 0.065 inch thick Bonded EPDM Rubber Seal. Fits 3/8 size fasteners tightly. 2000/Box. Price/Box.
3/8" ID x 3/4" OD (about .450" metal ID and .355" rubber ID fits/seals 3/8" fastener) 20 Gauge Hot-Dip Galvanized Steel with Bonded EPDM Rubber Washer. 1000/Bag. Price/Bag.
3/8" ID x 3/4" OD (about .450" metal ID and .355" rubber ID fits/seals 3/8" fastener) 20 Gauge Electro-Galvanized Steel with Bonded EPDM Rubber Washer. 6000/Box. Price/Box.
3/8" ID x 7/8" OD (about .450" metal ID and .355" rubber ID fits/seals 3/8" fastener) 20 Gauge Hot-Dip Galvanized Steel with Bonded EPDM Rubber Washer. 4000/Box. Price/Box.
5/16" Optional Washer. Actual Size .290" ID x 11/16" OD x 0.093" Thick. 70 Durometer Hardness Black EPDM Rubber. Made in USA with USA materials. 1000/Bag. Price/Bag.
5/16 ID x 1-1/2 inch OD, 20 gauge 304 Stainless Steel Back with 0.065 Bonded EPDM Rubber Washer. Fits 5/16 size threaded fasteners. 1000/Box. Price/Box.
5/16 ID x 1-1/4 inch OD, 20 gauge 304 Stainless Steel Back with 0.065 Bonded EPDM Rubber Washer. Fits 5/16 size threaded fasteners. 1500/Box. Price/Box.
