Titan 700-721 O-Ring
OEM Titan Sealing Component
Titan 700-721 O-Ring is a genuine OEM Viton stem O-ring used in the prime/spray valve assembly and fluid sections of compatible Titan airless sprayers, providing a chemical-resistant seal that prevents fluid leaks and maintains proper system pressure.
Compatibility Overview
Replace if the O-ring is cracked, flattened, hardened, or if fluid leaks, loss of pressure, or erratic spray performance occurs.
Titan Sealing Component Replacement
Titan 700-721 O-Ring for Prime/Spray Valve and Fluid Section Service
Titan 700-721 is a genuine OEM Viton stem O-ring engineered to provide a high-performance seal in the prime/spray valve assembly and fluid sections of compatible Titan airless sprayers. This precision O-ring is fitted into the prime/spray valve assembly, providing a protective seal for the valve stem. It is also included as part of the complete PrimeSpray Valve Assembly (700-258). Viton material provides excellent chemical resistance against solvents, paints, and coatings, as well as high-temperature durability.
| Detail | Technical / Commercial Information |
|---|---|
| Product Overview | Genuine Titan OEM Viton stem O-ring for compatible airless sprayers. Used in the prime/spray valve assembly and fluid sections to seal fluid passages, pump components, and connections. |
| Function | Provides a tight seal for the valve stem within the prime/spray valve assembly. Prevents fluid leaks under pressure, stops air ingestion that causes loss of prime, and maintains pressure stability. Viton material resists degradation from aggressive solvents, paints, thinners, and high temperatures. |
| Specifications | Material: Viton. Dimensions: .101 ID x .070 CS (cross-section). Sold individually. Included in PrimeSpray Valve Assembly (700-258). |
| Compatible Airless Sprayers | 330, 340, 440I, 440IX, 440XC, 550XC, 540IX, 640I, 640IX, 660XC, 690GXC, 740I, 740IX, 840I, 840IX, 1100XC, 1140I, 1140IX, 1200GXC. |
| Compatible Epic / Impact / Performer Models | Epic 440E, 447EX, 447HPX, 660EX, 660HPX, 690GX, 1200HPG; Impact 410, 440, 640, 640 I and IA; Performer 640I, 1140IX. |
| Compatible RentSpray / PowrLiner / Other | RentSpray 450, 500, 600, 700, Plus; PowrLiner 2800, 3100; PowrTex 1200SF; ProMark II; Elite E20; LineCrew 1600. |
| OEM Part Number | 700-721 O-Ring (Viton, stem). |
| Replacement Indicators | Visible cracks, cuts, or nicks in the O-ring; O-ring is flattened or compressed and no longer provides a tight seal; hardened or brittle O-ring with loss of elasticity; fluid leaks detected at connections or pump sections. |
| Related Parts Commonly Serviced Together | PrimeSpray Valve Assembly (700-258), gasket (700-537), Viton O-ring (221-012), PTFE O-ring (222-012). |
| Common Problems Solved | Restores leak-tight sealing, eliminates fluid loss and pressure instability, prevents air ingestion and loss of prime, and ensures reliable operation with chemical-based coatings. |
| Why Genuine OEM | Exact dimensions and Viton material composition ensure proper fit and sealing effectiveness under high pressure. A low quality or incorrect O-ring may fail to seal, allow fluid leaks, or degrade prematurely when exposed to aggressive solvents. |
When replacing the 700-721 O-ring, always lubricate the new O-ring with a compatible grease or coating material before installation. Inspect the groove and mating surfaces for scratches or debris. Do not over-stretch the O-ring during fitting. Always replace O-rings when servicing the prime/spray valve to ensure a proper seal. A screwdriver and pliers are often needed for the repair.
Frequently Asked Questions
Quick answers for confirming fitment and identifying when replacement is needed.
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