O-Rings & Gaskets
Stop leaks in your hot tub or spa with our comprehensive selection of o-rings and gaskets. From pump seal o-rings to jet body gaskets, our parts are manufactured from EPDM and silicone materials rated for hot, chemically treated spa water. We carry hundreds of sizes to fit nearly any spa application. We offer competitive international shipping rates to buyers worldwide.
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2 Inch Heater Pump Union Gasket 3-Pack - 2.5 Inch Lip - Balboa Gecko Compatible
HTPOFAmerica
MSRP: $13.45$7.99This package contains THREE (3) standard 2 inch heater or pump union gaskets featuring a 2 1/2 inch center-to-center lip. These gaskets measure 2 7/8 inches outer diameter with an inner diameter of approximately 2 3/16 inches. The lip designed to seat...MSRP: $13.45$7.99 -
2-Pack 2 Inch Hot Tub Heater/Pump Union Gaskets - 2.5" Lip - Balboa Gecko Compatible
HTPOFAmerica
MSRP: $8.99$6.99This product includes Two (2) Premium 2" Heater or Pump Union Gaskets featuring a lipped design with 2 1/2" center-to-center measurement. These gaskets measure 2 7/8" outer diameter, approximately 2 3/16" inner diameter, and feature a ridge with 2 1/2"...MSRP: $8.99$6.99 -
Spa Heater Union 2 1/2" Thread x 2" Slip with Matching Gasket - Hot Tub Parts
HTPOFAmerica
MSRP: $18.99$13.99This listing includes one 2 1/2" Thread X 2" Slip Heater Union complete with matching Gasket. This union connects 2" plumbing to a 2 1/2" heater flange. The slip side accepts 2" pipe or fittings for gluing (measuring approximately 2 3/8" across), while...MSRP: $18.99$13.99 -
Discontinued 2 1/2" Thread X 1 1/2" Slip Heater Union with Gasket for Hot Tub Spa
HTPOFAmerica
MSRP: $18.99$13.99This component is no longer manufactured by the original supplier.This listing is for a 2 1/2" Thread X 1 1/2" Slip Heater Union complete with matching Gasket. This union accepts a 1 1/2" pipe or fitting on the slip (glue) side and threads onto a 2 1/2"...MSRP: $18.99$13.99Qty in Cart: 0Quantity:Price:MSRP: $18.99$13.99Subtotal: -
2 1/2 Inch Hot Tub Heater Union Nut Kit with Therm Gasket - Set of 2
HTPOFAmerica
MSRP: $64.99$37.99Complete 2 1/2" Heater Connection Kit - Pair IncludedThis comprehensive kit contains everything needed for professional heater tube installation: 2 complete sets, each featuring a 2 1/2" flange nut, split retainer ring, and Therm-style gasket designed...MSRP: $64.99$37.99 -
2-Pack 2-1/2" Spa Pump Union T Gaskets - 3 5/8" Thread Fit - Replacement Seals
HTPOFAmerica
MSRP: $19.99$14.99These replacement gaskets come as a pair (2 pieces) designed for 2 1/2" pump or heater unions with approximately 3 5/8" interior thread measurement. Each gasket features precise dimensions of 3 1/4" O.D. x 2 3/8" I.D. with a 2 7/8" center-to-center lip...MSRP: $19.99$14.99 -
2 1/2" Hot Tub Heater Union Nut & Retainer Kit with Installation Guide
HTPOFAmerica
MSRP: $28.99$18.99Important: Verify Measurements Before Ordering - This 2 1/2" size is uncommon and typically found only in swim spas with large 3" heaters or select smaller hot tubs. Most standard hot tubs use 2" heater unions, which are also available at Global. Please...MSRP: $28.99$18.99 -
2 1/2" Hot Tub Heater Union Nut Kit with Therm Gasket - Installation Guide
HTPOFAmerica
MSRP: $31.99$21.99Important - Verify Size Before Ordering: This 2 1/2" heater union nut is uncommon in standard hot tubs. Typically found only in swim spas with large 3" heaters or select smaller tubs. The standard 2" size fits most applications. Please confirm your...MSRP: $31.99$21.99 -
1 1/2" Spa Heater Union O-Ring - 1 7/8" Center to Center Measurement
HTPOFAmerica
MSRP: $7.99$5.99This replacement O-ring is designed for 1 1/2" heater unions and measures 1 7/8" center to center. Engineered to fit the 1 7/8" groove found on most standard 1 1/2" heater unions, this seal creates a watertight connection between your spa heater and...MSRP: $7.99$5.99 -
2 Pack - 2 1/2" Therm Style Heater Union Gaskets for Hot Tub Spa Pump Plumbing
HTPOFAmerica
MSRP: $19.99$14.99This is a pair of 2 1/2" Therm style union gaskets designed for sealing heater or pump unions in hot tub plumbing systems.These gaskets are specifically sized at 3 1/4" O.D. x 2 3/4" I.D. with lip measurement of 3 1/8" center to center. Please verify...MSRP: $19.99$14.99 -
Standard 2 1/2" Pump Union O-Ring - Hot Tub Spa Replacement Seal
HTPOFAmerica
MSRP: $7.99$5.99This replacement seal is a Standard 2 1/2" Pump Union O-Ring designed for spa plumbing connections. Measuring 2 1/2" Center to Center in diameter, this o-ring provides a watertight seal for most pump unions, though compatibility varies by model—please...MSRP: $7.99$5.99 -
MSRP: $6.94$5.40