Product Overview
PU Flat Gasket is a high-performance polyurethane sealing solution designed for industrial and mechanical applications. With excellent elasticity, wear resistance, and chemical compatibility, PU flat gaskets provide reliable sealing under pressure, vibration, and dynamic loads.
Ideal for automotive, hydraulic, pneumatic, and industrial machinery, PU flat gaskets ensure leak-proof performance and long service life while reducing maintenance frequency.
Structure & Cross-Section
- A. PU Material Layer – Flexible, durable, and wear-resistant
- B. Flat Profile – Provides uniform sealing across flanges
- C. Optional Reinforcement – Fiber or fabric inserts for high-pressure applications
- D. Coating / Surface Treatment – Anti-stick, lubricated, or chemical-resistant finishes
Cross-section ensures excellent compression recovery and maintains seal integrity under varying loads and temperatures.
Material Description
| Material | Key Properties | Applications |
|---|---|---|
| Polyurethane (PU) | Elastic, wear-resistant, chemical stable, high load capacity | Flanges, pumps, hydraulic systems, industrial machinery |
| PU + Fabric Reinforcement | Enhanced tensile strength, reduced creep, improved dimensional stability | High-pressure seals, dynamic machinery, automotive parts |
| Special Coated PU | Low friction, chemical-resistant, anti-stick | Food machinery, chemical pumps, specialty applications |
Certifications & Quality Standards
ISO 9001
RoHS
REACH
TUV
FDA Compliant
Appearance & Surface Advantages
- High-precision flat surface ensures uniform sealing
- Optional surface treatments: PTFE coating, lubricating oil, talc spray
- Excellent compression set resistance and long-term elasticity
Our PU Flat Gasket
- High dimensional accuracy
- Durable and elastic
- Optional surface treatments
- Long service life
Standard Gaskets
- Variable thickness & tolerance
- Lower durability
- No surface treatment
- Shorter lifespan
Applications
Automotive Flanges
Industrial Machinery
Hydraulic & Pneumatic
HVAC Systems
Packaging Options
- Bulk PE bags with protective cartons
- Pre-counted packages for inventory management
- Custom labeling with part numbers and batch codes
- Palletized export packaging available
Customer Feedback
"PU flat gaskets provided the perfect sealing solution for our hydraulic systems. Excellent elasticity and wear resistance."
"Dimensional accuracy and surface finish are top-notch. Easy installation and long-lasting performance."
About Best Seal
Best Seal Imp. & Exp. Co., Ltd. specializes in precision gaskets, O-rings, and sealing solutions with 20+ years of experience. We provide material selection, precision molding, and surface treatment solutions for automotive, industrial, and chemical applications.
Frequently Asked Questions
Q1: Can PU flat gaskets be custom-sized?
A: Yes, we can manufacture custom thickness, diameter, and shapes based on drawings or samples.
Q2: What is the temperature range?
A: Standard PU gaskets support -40°C to +120°C. High-temperature PU is available upon request.
Q3: Are PU gaskets chemically resistant?
A: PU has good resistance to oils, fuels, and mild chemicals. For aggressive chemicals, we recommend reinforced or coated PU gaskets.
Q4: Surface treatment options?
A: PTFE coating, lubricating oil, or talc spray can be applied to reduce friction and improve assembly.
Q5: Minimum order quantity?
A: Typically 1,000 pcs for standard sizes; custom projects may vary.
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