The selection of a qualified buffer pad sheet has a direct impact on the equipment life, product yield and long-term production cost. Shock absorption, vibration isolation and surface protection, three mainstream elastic sheets – PU Sheet, Solid Silicone Rubber Sheet and Silicone Foam Sheet are often hard to distinguish for factory buyers.
Engineering Plastic Sheet and Rods AHD offers a full range of engineering plastic sheets and rods. 99.7% pass rate in performance of sheets and rods, flexible small-batch sampling, and volume order discounts for global manufacturers. Supports third-party testing.
AHD PU Sheet (Polyurethane Sheet)
Technical Parameters of 3 Kinds of Buffer Pad Sheet Comparison
1. PU Sheet ( PU Buffer Sheet Industrial)
Operating temperature: -30℃~80℃ short peak temperature ≤90℃.
Hardness range: Shore A10 – Shore D80, fully tunable by formula adjustment.
Compression set (25% deformation, 70℃/22h): ≤4.8%, top load-bearing stability in the three buffer pad sheet materials.
Tear strength: 22-35kN/m Good anti-friction & anti-impact performance.
Density: 45-95 kg/m3 Heavy density grades carry static load up to 1.2 MPa.
Compliance: RoHS, REACH No FDA food-contact certification available.
2. Solid Silicone Rubber Sheet (High Temperature Silicone Rubber Cushion Sheet)
Operating temperature: -40℃ ~ 200℃ Instant heat resistance: 250℃.
Hardness: Shore A30 - Shore A70.
Compression set (25% deformation, 150℃/22h): ≤7.2% high temperature cycle stable elastic recovery.
Tear strength: 14-28 kN/m Chemically inert to weak acid & alkali.
Density: 110 – 140 kg/m³, integrated sealing & buffering solid dense structure.
Compliance: RoHS, FDA 21 CFR 177.2600, LFGB, UL94 V0 insulation grade, food-safe optional grades.
3. Silicone Foam Sheet (Lightweight Silicone Foam Pad)
Operation temperature : -50℃~ 180℃, Outdoor & aerospace parts extreme cold resistance.
Hardness: Shore A10 – Shore A25, ultra soft microporous structure.
Compression set (30% deformation, 120℃/22h) ≤9.5% Perfect for low pressure gap filling.
Tear resistance: 6–12 kN/m, low resistance to mechanical wear under repeated friction.
Density 0.2-0.6 g/cm3 60% lighter than solid silicone rubber cushion sheet of the same thickness.
Heat conductivity: 0.032 W/(m·K) Good heat insulation property.
Compliance: RoHS, low-VOC aerospace-grade formula, optional food-safe grades.
Heavy-load equipment should use industrial PU buffer sheet for long term anti-collapse performance; high temperature continuous production lines should use solid silicone rubber cushion sheet instead of PU buffer pad sheet to prevent thermal aging failure.
Unique Advantages of PU Sheet as Industrial PU Buffer Sheet
1. Heavy-Duty Anti-Vibration & Good Load-Bearing
The lowest compression set at normal temperatures was observed in the industrial PU buffer sheet, thus it is the best choice for CNC machine bases, anti-collision blocks for conveyor lines and vibration isolation pads for hydraulic equipment.
2. High wear resistance & economical mass customization
PU Plastic Sheet does not powder or crack on surface after many friction It handles CNC engraving, die cutting & self adhesive lamination. Raw material cost is 35% less than Solid Silicone rubber cushion sheet.
3. Limitations and Matched Application Scenarios
Disadvantages: Poor heat resistance, swelling under mineral oil, strong UV aging.
Best Fit Industries: automated production lines, metal stamping shops, packaging of heavy goods in logistics, reducing vibration in indoor mechanical equipment.
Unique Benefits of Solid Silicone Rubber Sheet as High Temp Silicone Rubber Pad Sheet
1. Wide Thermal Stability & Food Grade Safety Contact
High temp silicone rubber cushion sheet. Maintains consistent elasticity in alternating hot and cold cycles,without hardening or deformation. FDA certified grade can directly touch baking molds, food conveyor fixtures and pharmaceutical production jigs. Industrial PU buffer sheet has no release of toxic volatile matter when being heated.
2. Dual function: Buffer Pad Sheet + Insulation Seal
Solid silicone rubber sheet has volume compressibility and stable dielectric performance. This buffer pad sheet is used for new energy battery modules, oven door gaskets and high-voltage control cabinet lining, which can be realized at the same time for shock absorption, waterproofing and electrical insulation.
3. Constraints and Suitable Application Cases
Cons: Higher priced material, less soft for ultra-light precision protection.
Best fit industries: Food processing machinery, High temperature thermoforming equipment, Outdoor solar panel supports, New energy power storage cabinets, Medical assembly fixtures.
AHD Silicone Sheet Roll
Light Weight Silicone Foam Shock Pad Unique Advantages of Silicone Foam Sheet
1. Ultra-Low Contact Stress Avoids Precision Surface Scratches
Soft contact pressure without indentation on coated glass, display panels and polished optical lenses, due to lightweight silicone foam shock pad with uniform 20 – 50μm closed micropores.
2. Excellent Thermal Insulation and Space Compensation
Silicone foam shock pad fills irregular assembly gaps 0.5-5mm and prevents heat transfer between hot and cold parts. The material has a noise reduction coefficient of 0.27 and is widely used for the insulation of oven lining and the shock absorption of the server cabinet.
3. Limitations & Suitable Application Scenarios
Cons: Poor endurance at heavy loads, permanent collapse at sustained high pressure.
Best-fit industries: consumer electronics packaging, display screen lamination fixtures, aerospace lightweight components, internal gap filling for battery packs, transportation lining for precision optical instruments.
AHD Silicone Foam Rubber Sheet
Step-by-Step Workflow for Buffer Pad Sheet Material Selection
Step 1: Check operating environment Measure continuous operating temperature, UV exposure, oil/chemical contact. The industrial PU buffer sheet can be used for a long time above 90℃.
Step 2: Load condition defined: static load over 0.8 MPa, choose PU sheet buffer pad sheet, low pressure precision protection, silicone foam shock pad, medium load and high temp, solid silicone rubber cushion sheet.
Step 3: Clear the compliance requirements: For food/medical production, you need FDA silicone grades; for general machinery, you can use a RoHS industrial PU buffer sheet to save the budget.
Step 4: Confirm processing demand: For large volume standardized cutting, prefer low cost PU sheets; for thin precision gasket customization, choose silicone foam shock pads from engineering plastic sheet and rod supplier AHD.
AHD's Industry Segmented Matching Solutions
Heavy conveyor vibration isolation industrial PU buffer sheet (Shore A60, thickness 6–12mm) for automotive component manufacturing
Oven fixture buffering high temp silicone rubber cushion sheet (FDA LFGB certified, Shore A45). For food baking & beverage machinery.
Smartphone & LCD assembly:Screen carrying protection-light weight silicone foam shock pad (density 0.3 g/cm3, 1-3mm thin sheet).
New energy battery PACK production: Module internal sealing buffer composite silicone foam buffer pad sheet.
Indoor CNC machine workshop: Base shock absorption, cost control-bulk PU sheet buffer pad sheet with volume order discount.
AHD Silicone Sponge Sheet
Industrial PU buffer sheet: dominate normal temperature heavy load shock absorption. High temp silicone rubber cushion sheet: balance heat resistance and food safety. Lightweight silicone foam shock pad: specialize in scratch-free precision lightweight protection.
The choice of the matched buffer pad sheet is a direct reduction of long-term operation costs given the growth of raw material and defective product costs for global manufacturers. AHD is a trusted engineering plastic sheets and rods supplier, offering customization, precision die-cutting and third-party performance testing reports for all three of its buffer pad sheet materials.
Ask for samples of buffer pad sheet today from AHD, and get custom trial orders and professional material selection consultation. Our technical team provides performance test data sheets of PU sheet, silicone rubber sheet and silicone foam sheet, and exclusive volume purchase discounts for bulk buffer pad sheet procurement. Get customized industrial buffer material solutions in 24 working hours by filling out the inquiry form at AHD official website.
AHD Clear Polyurethane Sheet
Q1: Which buffer pad sheet works best for heavy-duty indoor machinery vibration reduction?
Industrial PU buffer sheet is the top pick. It features low compression set, high tear strength and lower cost, ideal for CNC bases and conveyor anti-collision blocks under normal temperature below 80°C.
Q2: Can high-temp silicone rubber cushion sheet touch food materials directly?
Yes. AHD’s solid silicone rubber sheet meets the standards. It releases no harmful volatiles, suitable for bakery fixtures and food machinery buffer applications.
Q3: What custom buffer pad support can AHD provide as an engineering plastic sheet and rod supplier?
AHD offers formula hardness tuning, precision die-cutting, test samples, third-party performance reports, small trial orders and exclusive discounts for mass sheet purchases.