Three-quarter view of a stainless steel press-fit pipe cap on a white background.
View looking into the open end of the cap, showing the internal O-ring groove and socket.
Direct view of the smooth, closed end (domed) of the cap.
Side view of the cap, showing its height and the transition from the socket to the closed end.
Two identical stainless steel pipe caps placed side-by-side on a white background.
Two pipe caps positioned at different angles on a white background.

Stainless Steel Double Press-Fit Pipe Cap (End Closure Fitting)

Category Tag

  • Secure Pipe End Closure: Designed to permanently or temporarily seal the end of a pipe run, providing protection against contamination, leakage, and for pressure testing.

  • System-Integrated Seal: Utilizes the same reliable double press-fit O-ring sealing technology as all other fittings in the system, ensuring a consistent and leak-proof termination point.

  • Simple & Reliable Termination: The one-piece design is pressed onto the pipe end using the standard tool, creating a robust, tamper-resistant seal in seconds.

  • Individually Pressure Tested: Every cap is factory tested above 1.05 MPa, guaranteeing its integrity as a system endpoint.

  • Full Material & Standard Compliance: Manufactured from 304/316L stainless steel, conforming to GB/T 19228 and ISO 15835 for a corrosion-resistant and durable finish.

Get Custom Quote

The Definitive Endpoint for a Secure and Reliable Piping System

The Stainless Steel Double Press-Fit Pipe Cap is the essential component for completing and sealing a piping network. As the final piece in our comprehensive Double Press-Fit System Overview, this cap ensures that every pipeline terminus is as secure, hygienic, and reliable as the connections along its length. It provides a clean, permanent solution for terminating lines, isolating sections for maintenance, or protecting open pipe ends during construction.

 

More Than Just a Plug: Critical Functions of a Press-Fit Cap

A properly designed cap serves multiple vital roles in system integrity and safety:

  • Permanent System Termination: Seals off unused branches or the ends of main lines in a finished installation.

  • Pressure Testing & Maintenance: Allows for the temporary sealing of lines for hydrostatic or pneumatic testing, or for safely isolating sections during repair.

  • Contamination Protection: Prevents dust, debris, and pests from entering the pipeline during construction or in standby systems.

  • Safety & Aesthetics: Provides a smooth, finished appearance to pipe ends and eliminates sharp edges or potential leak points.

 

Engineered with the Same Core Reliability

Despite its simple function, the cap incorporates the same precision engineering as our more complex fittings:

  • Integrated O-Ring Seal: Features a precision EPDM/NBR O-ring seated in a machined groove. The standard double-press action compresses this ring against the pipe’s outer wall, creating a seal validated by the same rigorous [Internal Link: System Pressure & Performance Testing] protocol.

  • Robust, One-Piece Construction: Made from a single piece of stainless steel, ensuring strength and eliminating any weak points. The domed or flat-end design provides mechanical rigidity.

 

Cross-section Diagram

Cross-sectional diagram of a pipe cap, showing the internal O-ring groove and how it compresses against the outer wall of an inserted pipe.
Sealed Termination: This cutaway reveals how the O-ring is compressed to form a leak-proof seal at the pipe end, mirroring the connection seal technology.

 

Quality and Compliance for Long-Term Performance

  • Material & Standards: Fabricated from 304, 304L, 316, or 316L stainless steel, offering corrosion resistance matching the pipes and fittings. Conforms to GB/T 19228.1 and relevant international standards.

  • Verified Integrity: Each cap undergoes individual pressure testing (>1.05 MPa). The base material is subject to the same stringent checks (tensile strength ≥520 MPa, flattening test) as all system components.

 

Specification Table

Model Nominal Diameter Dimensions(mm) Dimensions(inch)
SKD15 DN15 16 0.63
SKD20 DN20 20 0.787
SKD25 DN25 25.4 1
SKD32 DN32 32 1.26
SKD40 DN40 40 1.57
SKD50 DN50 50.8 2
SKD60 DN60 63.5 2.5
SKD65 DN65 76.1 3
SKD80 DN80 88.9 3.5
SKD100 DN100 101.6 4
SKD125 DN125 133.3 5.25
SKD150 DN150 159 6.26
SKD200 DN200 219 8.62

 

Primary Applications

  • Permanently sealing the ends of supply risers, branch lines, or manifolds.

  • Temporary closure of pipes during phased construction or system modifications.

  • Isolating sections for pressure testing or system maintenance.

  • Providing a clean, safe finish to pipes in exposed locations.

Request Product Quote

Friendly customer service representative for industrial stainless steel pipes and fittings, wearing headset in modern office environment, ready to assist with quotes and technical support.

Related products