1/2 x 1-1/2 in. Galv. EPDM Bonded Sealing Washer is made of 20 gauge hot-dip galvanized steel with bonded EPDM rubber washer.
MATERIALS:
ASTM A-527 20 Gauge Hot Dip Galvanized Steel; Black EPDM Rubber, 70 durometer hardness per ASTM D2000; Overall washer