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Material Systems and Specification Parameters
| Type | Primary Rubber Type(s) | Thickness Range (mm) | Hardness (Shore A) | Tensile Strength (MPa) | Elongation (%) | Operating Temp. (°C) | Typical Color |
| General Purpose | NR, SBR | 1-50 | 40-80 | 5-20 | 200-600 | -30~80 | Black, Gray |
| Oil-Resistant | NBR | 1-50 | 50-90 | 7-25 | 150-500 | -30~120 | Black, Green |
| Acid/Alkali-Resistant | CR, EPDM | 1-30 | 50-85 | 6-18 | 200-400 | -40~130 | Black, Blue |
| High-Temperature Resistant | FKM, SI | 0.5-10 | 50-80 | 5-15 | 100-400 | -60~250 | Brown, Red, Translucent |
| Insulating | EPDM, NR | 1-20 | 40-75 | 5-15 | 200-500 | -50~100 | Red, Black |
| Conductive/Anti-static | NR, CR (with conductive fillers) | 1-10 | 50-80 | 4-12 | 150-350 | -30~100 | Black |
| Flame-Retardant | CR, Halogenated Compounds | 1-20 | 55-85 | 6-18 | 200-450 | -30~120 | Black, Red |
| Food/Medical Grade | SI, Platinum-cured NR | 0.5-10 | 40-70 | 4-12 | 300-700 | -60~200 | White, Translucent |
Typical Application Fields
| Application Field | Specific Product/Component | Functional Requirements | Recommended Type |
| Industrial Equipment | Sealing Gaskets, Conveyor Belt Liners, Vibration Dampers | Sealing, Cushioning, Wear Resistance | Oil-Resistant / General Purpose |
| Automotive & Transportation | Seals, Engine Mounts, Floor Mats, Brake Lining Backing | Weather Resistance, Vibration Damping, Wear Resistance, Oil Resistance | Oil-Resistant / EPDM / CR |
| Construction Engineering | Waterproof Membranes, Bridge Bearings, Expansion Joints, Carpet Underlay | Waterproof, Aging Resistance, Load Bearing, Elasticity | EPDM / CR / General Purpose |
| Electrical & Electronics | Insulating Mats, Conductive Connectors, Cable Sheathing | Insulation/Conduction, Flame Retardancy, Weather Resistance | Insulating / Conductive / Flame-Retardant |
| Food & Pharmaceutical | Conveyor Belts, Workstation Mats, Seals | Non-toxic, Cleanability, Temperature Resistance, Elasticity | Food-grade Silicone / EPDM |
| Mining & Metallurgy | Chute Liners, Flotation Machine Linings, High-Temp Conveyor Belts | Wear Resistance, Impact Resistance, High-Temp Resistance | High-wear NR / High-Temp Resistant |
| Household & Consumer | Floor Mats, Anti-slip Mats, Yoga Mats, Mouse Pads | Eco-friendly, Anti-slip, Cushioning, Aesthetics | Colored NR / SBR / PE Foam |
Application Case Studies
1. Vibration and Noise Reduction for Rail Transit Vehicle Flooring
Problem: Excessive floor vibration and noise during vehicle operation, affecting passenger comfort.
Solution: Used 8mm thick closed-cell rubber vibration damping pad (Hardness 50±5 Shore A) fully laid under the floor.
Result: Interior noise reduced by 8-10 dB, vibration damping efficiency > 65%, improved ride comfort.
Process Key Point:** Used flame-retardant adhesive between rubber pad and metal floor to prevent shifting.
2. Acid-Resistant Sealing for Chemical Plant Reactor Flange
Conditions: Flange connection required to seal concentrated sulfuric acid at 80°C and 0.6 MPa pressure.
Solution: Used 3mm thick Fluorocarbon Rubber (FKM) sealing gasket with a tongue-and-groove face structure.
Result: Achieved zero leakage, service life exceeded 3 years, far surpassing original ordinary rubber gasket.
Innovation: Gasket used a composite structure: inner ring FKM, outer ring metal reinforcing ring to prevent extrusion under internal pressure.
3. Anti-static Raised Floor for Data Centers
Challenge: Required stable load-bearing capacity, optional high insulation/anti-static properties, and fire resistance.
Solution: Used heavy-duty (load-bearing ≥1200 kg/m²) composite rubber flooring. Top layer was conductive/static-dissipative rubber (resistance 10^6-10^9 Ω), bottom layer was high-resilience foam rubber.
Result: Met anti-static standards, comfortable underfoot, excellent load-bearing, fire rating B1.
Feature: Modular design for easy cable routing and maintenance.
Industry Solutions
Comprehensive Wear Protection Solution for Construction Machinery
Pain Point: Severe wear on working parts of excavators, loaders, etc., leading to high replacement costs.
System Solution:
1. Critical Area Lining: Line hoppers, chutes with high-wear NR rubber sheet (wear volume < 0.1 cm³/1.61 km).
2. Bolting Optimization: Use countersunk rubber-metal composite liner plates to prevent detachment.
3. Buffering & Damping Design: Install high-damping CR damping pads under cab floor and at connection points.
4. Quick Replacement Design: Modular liner plates for on-site rapid replacement.
Benefits: Equipment life extended 2-3 times, maintenance costs reduced by 40%, noise reduction.
Sanitation Upgrade Solution for Food Processing Lines
Problem: Traditional conveyor belt joints trap dirt, workstation surfaces are hard to clean, creating sanitation dead zones.
Solution:
1. Seamless Conveyor Belt: Use food-grade white silicone rubber sheet, vulcanized into endless loops without joints.
2. Integrated Work Surface: Cover with full sheets of acid/alkali-resistant EPDM rubber sheet, coved up the wall.
3. Drainable Anti-slip Floor Mat: Use perforated rubber floor mats for quick drainage, slip and fatigue prevention.
Result: Achieved HACCP certification, cleaning efficiency improved by 60%, safer and more comfortable for workers.
Technical Comparison Guide: Rubber Sheet vs. Other Sealing/Cushioning Materials
| Property | Rubber Sheet | Polyurethane Sheet | Engineering Plastic Sheet (e.g., PE, PP) | Cork/Felt |
| Elasticity/Cushioning | Excellent | Good (Excellent at high hardness) | Poor | Medium |
| Wear Resistance | Excellent - Outstanding | Outstanding | Good | Poor |
| Temperature Range (°C) | -60~250 (Wide) | -30~100 | -40~80 | -20~120 |
| Oil/Solvent Resistance | Varies (Good to Excellent by type) | Good | Excellent | Poor |
| Compression Set | Small - Medium | Small | Large (High Creep) | Large |
| Cost | Medium | Medium - High | Low | Medium |
| Processability | Excellent (Easy to cut/form) | Medium (Requires special tools) | Good | Poor (Fragile) |
| Typical Applications | Seals, Damping, Wear Liners | High-wear parts, Roll covering | Chemical tanks, Light-duty parts | Seals, Cushioning (light load) |
Selection Decision Matrix
| Application Requirement | Priority Recommendation | Alternative Option | Key Metrics |
| Heavy-duty Cushioning & Damping | High-elasticity NR/CR Sheet | Polyurethane Microcellular Sheet | Rebound Rate, Compression Set, Fatigue Life |
| Oil-resistant Sealing | NBR/FKM Sheet | Polyurethane Sheet | Volume Change in Oil, Tensile Strength |
| Outdoor Weather Resistance | EPDM/CR Sheet | Certain Special NR Grades | Ozone Aging, UV Aging Performance |
| Food Contact | Platinum-cured SI / Pure White EPDM | Specific NR Grades | FDA/GB 4806 etc. Certification, Odor |
| High Insulation | EPDM/SI Sheet | Special NR Grades | | Volume/Surface Resistivity, Dielectric Strength |
| High-Temperature Steam Resistance | FKM/EPDM Sheet | High-quality CR | Property Retention after High-Temp Aging |
| Low-cost Gaskets | SBR/Recycled Rubber Sheet | PE Soft Sheet | Cost, Basic Sealing Performance |
Performance Parameter Table (Typical Products)
| Test Item | General NR Sheet | Oil-Resistant NBR Sheet | High-Temp FKM Sheet | Test Method |
| Hardness (Shore A) | 60±5 | 70±5 | 75±5 | GB/T 531.1 |
| Tensile Strength (MPa) | ≥15 | ≥12 | ≥10 | GB/T 528 |
| Elongation at Break (%) | ≥350 | ≥250 | ≥150 | GB/T 528 |
