Diaphragm,Santoprene, Series Compact, Pro, Compatible with Grainger Part Number 2CAV1, 4GY48, 4RN27, 5U666, 5U667, Product Type Diaphragm Santoprene, Compatible with Manufacturer Part Number 666100-3EB-C, 666101-2EB-C, 666102-2EB-C, 6661A3-34B-C, 6661AJ-3EB-C, Compatible with Series Not Applicable, Compatible with Brand ARO, Ingersoll Rand