High-Durability PTFE Rod Wiper Ring

XIAYI High-Durability PTFE Rod Wiper Ring is designed for shock absorber guide assemblies where repeated rod movement, dust exposure and temperature changes can accelerate component wear. Made from modified PTFE and precision machined for stable contact, it supports oil wiping, rod protection and contamination control during long-term operation.

The standard size is 27.87±0.01 mm ID, 1.25±0.01 mm wall thickness and 2±0.01 mm height, with surface roughness controlled to Ra≤0.2 μm. Suitable for passenger vehicles, EVs, commercial vehicles and construction machinery, the product is manufactured under XIAYI's IATF 16949:2016 quality management system and supports both standard and customized OEM supply.

Rod Protection

Smooth Contact

The piston rod continuously moves through the guide assembly, making surface protection an important factor in shock absorber durability. Modified PTFE and a smooth finished surface help reduce friction points and minimize the risk of scratches during repeated movement.

Stable Fit

The standard inner diameter is controlled at 27.87±0.01 mm, with wall thickness of 1.25±0.01 mm and height of 2±0.01 mm. Roundness is controlled to ≤0.005 mm, helping maintain consistent contact around the rod and reducing uneven wear.

Contamination Control

Dust Protection

Shock absorbers can encounter road dust, sand, mud and moisture. The wiper helps remove external contaminants from the piston rod before they reach the internal guide and sealing components, reducing contamination-related wear.

Oil Control

The component also helps control residual oil on the moving rod. Stable wiping performance supports a cleaner sealing area and helps reduce the risk of oil accumulation and leakage caused by poor contact.

Long-Term Durability

Cycle Resistance

Shock absorber wipers experience continuous reciprocating movement during vehicle operation. XIAYI uses modified PTFE designed for repeated sliding applications. Testing has verified stable structure and wiping performance after 1 million reciprocating cycles under specified conditions.

Temperature Stability

The material is designed for approximately -40°C to 260°C environments. It can maintain functional stability in cold-weather and high-temperature applications, making it suitable for vehicles and equipment operating under changing thermal conditions.

Quality Control

Process Management

XIAYI uses PFMEA-based process management covering material preparation, molding, sintering, machining and finishing. Potential risks such as material inconsistency, dimensional deviation and surface defects are identified and controlled during production.

Final Inspection

Critical dimensions, roundness and surface finish are inspected before shipment. Batch records are maintained for traceability, while the company's quality management system follows IATF 16949:2016 requirements for automotive component production.

Application Range

Automotive

The High-Durability PTFE Rod Wiper Ring is suitable for shock absorber guide assemblies in passenger cars, SUVs, new energy vehicles and commercial vehicles. Its durable PTFE construction supports long-term rod wiping and protection in daily and high-mileage applications.

Heavy Equipment

For off-road vehicles and construction machinery, the wiper can handle applications involving vibration, dust and repeated movement. It is suitable for equipment such as excavators, loaders and road rollers where reliable rod protection is required.

OEM Case

New Energy SUV

A domestic new energy vehicle manufacturer experienced oil leakage, abnormal chassis noise and piston rod scratches after using conventional PTFE wiper rings for 3--6 months. Failure analysis identified loose dimensional tolerance, inconsistent sintering and insufficient surface finishing as the main causes.

The manufacturer then replaced the original component with a customized XIAYI High-Durability PTFE Rod Wiper Ring. After batch installation and a 100,000-kilometer road test, the vehicles showed no oil leakage or abnormal damping noise, while the piston rod chrome layer remained intact.

Verified Results

The shock absorber service life increased by 2.6 times, while chassis after-sales maintenance costs decreased by 62%. The product was subsequently adopted as an OE standard matching component for the manufacturer's new energy SUV and commercial vehicle platforms.

Custom Supply

Size Options

The standard 27.87 × 1.25 × 2 mm specification can be customized according to customer drawings, samples or assembly requirements. XIAYI can adjust inner diameter, wall thickness and height for different shock absorber structures.

Material Selection

Different modified PTFE formulations can be developed according to load, temperature, movement frequency and environmental conditions. XIAYI supports sample development, testing and subsequent mass production for OEM projects.

Frequently Asked Questions

Can it be used in dusty environments?

Yes. The High-Durability PTFE Rod Wiper Ring helps remove dust, sand and other contaminants from the piston rod before they enter the internal sealing area. Actual performance depends on the complete shock absorber design and operating conditions.

What is the operating temperature range?

The selected PTFE material can support approximately -40°C to 260°C, depending on the specific formulation and application conditions. XIAYI can recommend a suitable material for projects with continuous high-temperature or low-temperature requirements.

Can XIAYI provide customized products?

Yes. XIAYI supports customized dimensions and PTFE formulations based on technical drawings, physical samples and application requirements, covering prototype development and OEM mass production.

What quality standard does XIAYI follow?

XIAYI has established a quality management system according to IATF 16949:2016 and applies process control, dimensional inspection, performance testing and batch traceability to PTFE precision component production.