4" NBG 300 lb Flexitallic sprial-wound gasket, 300# CGI 304/304/Flexicarb/CRS w/ Alloy steel stud, ASTM A193, Grade B-7, threaded full length, with heavy hex nut, ASTM A194, Grade 2-H

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4" NBG 300 lb Flexitallic sprial-wound gasket, 300# CGI 304/304/Flexicarb/CRS w/ Alloy steel stud, ASTM A193, Grade B-7, threaded full length, with heavy hex nut, ASTM A194, Grade 2-H

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