Aladdin O-218-0 O-ring Dura-Glas / Max-E-Glas

Pump Lid Sealing + Replacement Compatibility

• Replacement pool pump lid and strainer-cover O-ring
• Replaces Pentair / Sta-Rite U9-229
• Cross-references American Products / Pentair 39204100
• Used with compatible Sta-Rite Dura-Glas and Max-E-Glas P2RA/P2R pumps
• Used in compatible American Products Eagle pump applications
• Custom-molded O-ring configuration for the applicable lid assembly
• Approximate nominal size: 5-3/4 in. ID x 6-1/4 in. OD
• Aladdin replacement part O-218

Aladdin specifically includes O-218 as the lid O-ring in its Dura-Glas/Max-E-Glas P2RA and P2R pump repair kits and in its Eagle pump repair kit.

Quick Product Summary

The Aladdin O-218 Pump Lid O-Ring is a replacement sealing ring for compatible pool pump strainer and lid assemblies. It cross-references Pentair / Sta-Rite U9-229 and American Products / Pentair 39204100, making it a useful replacement when the existing lid O-ring is flattened, cracked, stretched, damaged, or no longer sealing properly. Aladdin documents O-218 in Dura-Glas, Max-E-Glas, P2RA, P2R, and Eagle pump service applications.

Best For

• Sta-Rite Dura-Glas pump lid service
• Sta-Rite Max-E-Glas pump lid service
• P2RA and P2R pump applications
• American Products Eagle pump applications
• Replacing Pentair / Sta-Rite U9-229
• Replacing American Products / Pentair 39204100

Why This Matters

• Helps restore the seal between the pump lid and strainer housing
• Replaces a worn lid O-ring without replacing the complete lid
• Helps reduce air entry caused by a damaged lid seal
• Exact cross-reference numbers simplify replacement selection
• Proper O-ring fit is important for dependable pump priming and circulation
• Part-specific replacement helps avoid using a similar-looking but incorrectly sized O-ring

Common Signs You Need This / Use This When

• The existing lid O-ring is cracked or split
• The O-ring has become flattened or distorted
• The pump lid seal has been identified as a source of air leakage
• The original O-ring is missing
• Your equipment parts information specifies U9-229, 39204100, or O-218
• You are servicing a compatible Dura-Glas, Max-E-Glas, P2RA, P2R, or Eagle pump

Product Specifications

Aladdin confirms O-218 as the lid O-ring used in Dura-Glas/Max-E-Glas P2RA/P2R and Eagle pump service kits. Current replacement-part data identifies O-218 with U9-229, 39204100, and 805-0436 applications; current packaged O-218 listings give nominal dimensions of approximately 5-3/4 inches ID by 6-1/4 inches OD.

Compatibility / Fitment Notes

Aladdin O-218 is documented for several related pool-equipment applications, so verify the existing equipment model or OEM part number rather than ordering by diameter alone.

Supported cross-references include Pentair / Sta-Rite U9-229 and American Products / Pentair 39204100. Aladdin also uses O-218 as the lid O-ring in Dura-Glas and Max-E-Glas P2RA/P2R pump repair kits.

Installation / Use Notes

Shut the pool pump off before opening or servicing the pump lid. Remove the old O-ring and inspect the sealing groove and mating surfaces for debris or damage. Install the replacement O-ring evenly without twisting or stretching it unnecessarily.

Use only a lubricant appropriate for pool O-rings and follow the equipment manufacturer’s service recommendations. Do not use petroleum-based lubricants unless specifically approved for the seal material.

Buy with Confidence

Benchmark Pool Supply provides pool-equipment replacement parts with practical part-number and compatibility information. The Aladdin O-218 can be matched against recognized OEM references such as U9-229 and 39204100, helping pool owners and service professionals identify the correct pump-lid seal before ordering.