Amazon.com : 3 Sets of Hunter PGP Seal Replacement Kit for Rotors, Hunter 253400, 3 Riser Seals (181500) and 3 Spring Seats (189900), Compatible with All PGP and PGP Ultra Rotors with
Hunter PGP-ADJ 3/4" Rotor Sprinkler, Precision Automatic Lawn Sprinkler Head With Adjustable Arc & Watering Distance to Prevent Overwatering
Amazon.com : 3 Pack Hunter 269400 Protective Rubber Cap for PGP Rotor, Sprinkler Cap Replacement Rubber Top for PGP Series, Hunter Sprinkler Head Cap, Hunter Rubber Replacement Cap with Included LED Keychain