SMC JISB2401 P6 O-Ring, 9.6X5.8X1.9 MSRP: Now: $0.30 Was: irv vacuum regulator 21 irv no size rating part o-ring, 9.6x5.8x1.9 nbr *image representative of product category only. actual product may vary in style. JISB2401 P6