

Part 945-003 is a replacement copper gasket for a wide range of compatible spray equipment. This precision gasket provides a leak-proof seal in high-pressure fluid connections, with copper material offering excellent conformability and heat resistance. When the original gasket becomes crushed, work-hardened, or damaged, replacement restores leak-free operation.
| Part Number | 945-003 |
|---|---|
| Part Description | Copper Gasket |
| Brand | Universal |
| Fits | PowrTwin 12000GHD; PowrTwin 12000GH; PowrTwin 12000 GHD; PowrTwin 8900GH; PowrTwin 6900GH; PowrTwin 4900GH; PowrTwin 4500; PowrTwin 3500; PowrTwin 3500 50th anniversary; PowrLiner 8900; PowrLiner 6000; PowrLiner 5000; PowrLiner 4900; PowrLiner 4000; Hydra M and Hydra Pro 2000_4000; Hydr M nad Hydra Pro Super; Commander; Admiral; 0528925N_2000_4000 |
| Condition | New |
The 945-003 copper gasket is a direct replacement sealing component for an extensive range of spray equipment including numerous PowrTwin models (12000GHD, 12000GH, 12000 GHD, 8900GH, 6900GH, 4900GH, 4500, 3500, 3500 50th anniversary), various PowrLiner models (8900, 6000, 5000, 4900, 4000), Hydra M and Hydra Pro 2000_4000, Hydr M nad Hydra Pro Super, Commander, Admiral, and 0528925N_2000_4000 equipment. Copper gaskets are used in high-pressure fluid connections such as pump outlets, fitting joints, and component interfaces where reliable sealing is critical. Copper is an ideal gasket material because it is soft enough to deform under compression, filling minor imperfections in sealing surfaces, yet strong enough to withstand high system pressures without extruding or failing. Copper also resists corrosion and conducts heat well. A properly compressed copper gasket creates a durable, leak-proof seal that can maintain integrity through thermal cycles and vibration. Over time, gaskets may become work-hardened, crushed beyond their limit, or damaged during disassembly, leading to leaks. This replacement gasket is manufactured to exact dimensions for proper fit. Installation requires clean sealing surfaces and proper torque on the mating fastener. Copper gaskets are typically single-use and should not be reused.
| Pressure sealing | Creates leak-proof seal under high pressure |
|---|---|
| Surface conformity | Deforms to fill imperfections in mating surfaces |
| Heat resistance | Withstands high temperatures |
| Fluid leakage | Visible leak at gasketed connection |
|---|---|
| Work-hardened | Gasket has become stiff and won't seal |
| Excessive crushing | Gasket thinned beyond useful life |
| Damage / nicks | Visible damage to gasket surface |
Copper gasket 945-003 is compatible with the following models. Verify fit using your equipment's parts diagram.
| Compatible Series | Models (partial list) |
|---|---|
| PowrTwin | 12000GHD, 12000GH, 12000 GHD, 8900GH, 6900GH, 4900GH, 4500, 3500, 3500 50th anniversary |
| PowrLiner | 8900, 6000, 5000, 4900, 4000 |
| Hydra | Hydra M and Hydra Pro 2000_4000; Hydr M nad Hydra Pro Super |
| Commander / Admiral | Commander; Admiral |
| Other | 0528925N_2000_4000 |
When replacing copper gaskets, inspect these associated components to ensure proper sealing.
Check for scratches, nicks, or deformation.
Inspect threads and sealing faces.
Verify proper torque for gasket compression.