- PU washers resist wear much better than rubber.
- With tight tolerance.
- Custom hardness, formulation and dimensions for specific requirement
- Can be machined or molded
- No or low mold costs
INDUSTRIES SERVED: Automotive , Household Products, Electronics, Oil and Gas Industry
Shanghai Pepsen only manuafacturs custom polyurethane rubber washers (also known as urethane washer, PU washer) in two ways ,not foam washer . One is by casting or compression molding, which is suitable for products with complex shapes and high tolerance requirements. The other way is to produce polyurethane sheet, tubes or rods, and then machine them into washers using a CNC lathe or stamping/punching process . This is suitable for washers with simple shapes and low tolerance requirements. Besides hardness, color, and the polyurethane formula can all be customized according to the working environment.
PU washers are commonly used to protect against wear, friction, vibration, and moisture in industries such as automotive, construction, valve, electrical ,industrial and manufacturing. Their applications include sealing, shock absorption in suspension and engine mounts, and anti-vibration for equipment.
| Custom Parameter | Available Options | Target Applications |
|---|---|---|
| Material Hardness | 20A to 98A to 80D durometer | Food processing lines, heavy machinery |
| Size | Diameters: 2mm – 2000mm Thickness: 1mm – 500mm | Hydraulic cylinders, precision (instruments) |
| Type | flate/plain washers, spring washers, locking washers | Medical devices, electronic enclosures |
| Custom urethane properties | Anti-static, UV-resistant, heat-resistant, highly abrasion-resistant, Vulkollan | Mining equipment, outdoor machinery |
| Compliance | FDA , RoHS-compliant | Pharmaceutical lines, food-grade setups |
Polyurethane washers, with benifits like wear resistance, chemical resistance, and shock absorption, are widely used in various industries.
Household Products: In kitchen and bathroom fixtures , polyurethane washers provide reliable sealing performance to prevent water leakage. Their food-grade formulation, water resistance and chemical resistance also enable long-term use and safty in humid environments.
Automotive Industry: Used in engine components, suspension systems, and transmission devices to provide shock absorption, cushioning, and sealing. For instance, at the connection between an automobile engine’s intake and exhaust manifolds, polyurethane washers can effectively prevent gas leakage while absorbing vibrations and impacts generated during engine operation, extending the service life of components.
Industrial Manufacturing: Applied at connection points of mechanical equipment (e.g., gears, bearings, bolts), polyurethane washers offer excellent sealing and cushioning performance. They block dust, oil, and moisture from entering, reducing component wear and malfunctions. Additionally, in scenarios like conveyor belt scrapers and pipeline cleaning, their wear resistance and cut resistance effectively enhance equipment operational efficiency and stability.
Oil and Gas Industry: During oil and gas extraction, transportation, and processing, polyurethane washers are used in pipeline connections and valve sealing. With good oil resistance and corrosion resistance, they can withstand high pressure and harsh working environments.
- Vibration Dampening: Our PU washers reduce mechanical vibrations, keeping equipment stable and quiet .
- Shock Absorption: They absorb sudden impacts, protecting machinery parts from damage.
- Flexible at Low Temperatures: Stay flexible even at -40° degree C, avoiding stiffness in cold industrial or outdoor setups.
- Abrasion Resistant: Withstand constant friction, outlasting rubber washers 5-7 times in applications like conveyors.
- Resistant to Most Chemicals: resists most of oils, solvents, and cleaners , ideal for manufacturing or automotive fluid systems.
- Weather and UV Resistant: Hold up against rain, sun, and elements—perfect for outdoor construction or marine use.
- Tight Sealing and Cushioning: Create leak-proof seals while cushioning parts, preventing gaps in hydraulic or pipe setups.
- Resistant to Becoming Brittle: Avoid cracking or hardening over time, maintaining performance for years.
- Ozone Resistant: Not damaged by ozone exposure, suitable for electrical or outdoor equipment long-term.
- Cost-effective: Longer lifespan cuts replacement frequency, lowering maintenance costs.
- A food plant using our sanitization-resistant washers cut downtime from failures by 50% in a year.
- An automotive manufacturer swapped to our heat-stabilized variants, slashing washer replacement costs by 35% (from 6 months to 2-year lifespans).
- A construction firm reduced machinery repair costs by 28% after switching to our dust-resistant PU washers.
Yes. We are manufacturer. Welcome to visit our factory.
Yes. The process includes Share needs → design & quote → prototype (opt) → production → delivery.
We have 10 inspectors to carry out raw material inspection, process control ,first article inspection and final inspection.
We use the ERP system to execute orders, and can check the order status and expected delivery time at any time.
All of products with 3-6 months guarantee (except very frequently wearing parts).
We will response in 24 hours with solutions such as replacement or reworking.
We have dedicated personnel to sort out and maintain molds regularly.
20,000 times for compressions molds and 30,000 time for casting molds
Due to the large quantity of molds, we can keep the molds for free for 2 to 3 years even if no order.
Customers only need to pay mold cost once. We will cover the cost if molds are damaged or reach the lifespan.
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