O-Ring, Compatible with Grainger Part Number 19RU82, Compatible with Manufacturer Model Number PD20A-AAP-AAA-B-G, PD20A-AAP-GGG-B-G, PD20A-AAP-SST-B-G, PD20A-ACP-AAA-B-G, PD20A-ASS-AAA-B-G, PD20A-ASS-STT-B-G, PD20P-FPS-PAA-G, PD20P-FPS-PTT-G,...