Part Number 23271 3 91380 B M NO 11 having (CAGE Code 52249) and FSC 5330 Packing and Gasket Materials in stock with ready to ship. Get an instant quote for 23271 3 91380 B M NO 11 Seal Nonmetallic Strip by Mestek Inc. Fill the form below with your desired order quantity, targeted price and the expected order-fulfilment date. Our dedicated account manager will get back to you within 15 minutes.