Description O-ring for under Surge model 'c' and 'p' Pulsators. also fits Mini Cup and Lo Profile Siphon milker original Babson surge number 10335 10YSU - 910532 Included in 4310 Rebuild Kit Related; 5105 Rebuilt C Model Pulsator 4310 Rebuild Kit 4311 Rebuild Kit with oil updated June 2025
