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