O RING; DB RX-13, N-EPDM, PLATE HEAT EXCHNGR. O RING; MATERIAL: N-EPDM; FFT: REFERENCE: DB RX-13, EXISTING EPDM NEED TO BE REPLACED WITH N-EPDM GRADE AS THIS SUPPORTS MORE TEMPERATURE THAN EXISTING EPDM; FOR PLATE HEAT EXCHANGER, MODEL NO: FHR10-UP-183, TAG NO: E-8221, SERIAL NO: 11167TH, MNFR DRG: E-8221-380-9002-002-4. MPN code: 2001097217, Manufacture Part No: 598384, Mfr Name: PT ARSOPI THERMAL EQUIPMENT THERMAL SA.