End Closure For Plastic Pipes Manufactured From Durable Stainless Steel Or Carbon Steel For Long Lasting Pressure Testing

These DN400mm sealing closures—fabricated from either stainless steel or carbon steel—are purpose-built for end-sealing of PVC and PE pipes during internal pressure testing procedures. High-temperature resistant silicone seal rings are pre-installed within precision-machined seal grooves to ensure reliable performance.

Integrated metal compression rings on the closures exert uniform compressive force on the silicone seal rings. Under applied pressure, the silicone O-rings undergo elastic deformation to fill the clearance between the closures and pipe ends, thereby forming a tight, leak-free seal that ensures the integrity of the pressure testing environment.

This hydrostatic testing fixture comprises:

• Semicircular base
• O-shaped silicone rubber sealing ring
• Pressure ring
• Fastening clamp
• Fastening bolts
• Compression bolts
• Vent valve

Each component is engineered to work in tandem, with the sealing ring ensuring leak-proof connections and the vent valve facilitating air release to guarantee the accuracy of pressure testing data.

These closures are specifically engineered to deliver secure end-sealing for pipe specimens including PVC, PE, PP-R, ABS, and composite pipes, supporting a comprehensive array of performance assessments such as hydrostatic pressure testing, burst testing, and negative pressure testing.

This component features a semicircular trough structure, which facilitates quick assembly, delivers leak-tight sealing performance, and enables highly user-friendly operation during testing. Custom diameter specifications can be tailored to meet specific customer requirements, with material options including 304 stainless steel or carbon steel to accommodate diverse application needs.

GB/T 6111, EN921, ISO1167, ASTM D 1598/1599

φ8, φ10, φ16, φ25, φ32, φ40, φ50, φ63, φ75, φ90, φ110, φ125, φ140, φ160, φ180, φ200, φ225, φ250, φ280, φ315, φ355, φ450, φ500, φ560, φ630, φ710, φ800, φ900, φ1000, φ1100, φ1200, φ1400, φ1600, φ1800, φ2000mm and British standard, American standard, etc.