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A Rubber Sheet is a versatile, durable material fabricated from natural or synthetic rubber compounds. It serves as a fundamental component in countless industrial, commercial, and residential applications, primarily functioning as a barrier to seal, protect, cushion, or insulate. At Kaxite Sealing, we engineer our rubber sheets to meet precise specifications, ensuring reliable performance under demanding conditions such as extreme temperatures, chemical exposure, and mechanical stress. The quality of a rubber sheet directly impacts the safety, efficiency, and longevity of the systems it integrates with, making the choice of supplier critical.
Choosing Kaxite Sealing for your rubber sheet needs guarantees access to products designed with excellence and consistency in mind. Our sheets are manufactured under strict quality controls, resulting in materials that offer superior performance.
To make an informed decision, understanding the technical specifications of a rubber sheet is essential. Below is a detailed breakdown of the standard parameters for our most popular rubber sheet compounds at Kaxite Sealing.
| Compound Type | Base Polymer | Key Properties | Typical Applications |
|---|---|---|---|
| Nitrile Rubber (NBR) | Acrylonitrile Butadiene | Excellent oil & fuel resistance, good abrasion resistance | Gaskets in automotive & machinery, fuel hoses, oil seals |
| Neoprene (CR) | Chloroprene | Good weather, ozone, & moderate oil resistance; flame retardant | Weather seals, outdoor padding, HVAC gaskets, wetsuits |
| EPDM Rubber | Ethylene Propylene Diene Monomer | Superior weather, ozone, & steam resistance; excellent electrical insulation | Roofing membranes, automotive weather-stripping, cooling system gaskets |
| Silicone Rubber | Silicon-Oxygen Polymer | Extreme temperature range (-60°C to 230°C+), inert, hygienic | Food & medical equipment, high-temperature gaskets, insulation |
| Natural Rubber (NR) | Latex (Polvisoprene) | High tensile strength, excellent elasticity & rebound | Anti-vibration mounts, seals requiring high flexibility |
| Fluoroelastomer (FKM/Viton®) | Fluorinated Hydrocarbon | Exceptional high-temperature & chemical resistance | Aerospace, chemical processing, high-performance automotive seals |
| Parameter | Standard Range (Kaxite Sealing) | Test Method | Importance |
|---|---|---|---|
| Hardness (Shore A) | 30 to 90 Durometer | ASTM D2240 | Measures resistance to indentation. Softer sheets seal better on uneven surfaces; harder sheets offer more structural support. |
| Tensile Strength | 10 to 25 MPa (varies by compound) | ASTM D412 | Maximum stress the material can withstand while being stretched before breaking. Indicates overall strength. |
| Elongation at Break | 100% to 600% | ASTM D412 | The percentage the material can stretch before rupture. Higher elongation indicates greater flexibility and tear resistance. |
| Compression Set | 10% to 40% (22 hrs @ 70°C) | ASTM D395 | Measures the material's ability to recover its original thickness after prolonged compression. Lower percentage is better for sealing applications. |
| Temperature Range | -60°C to 300°C (compound dependent) | ASTM D1329 / D573 | The continuous operational temperature span where the sheet retains its key properties. | Thickness | 0.5mm (1/32") to 50mm (2") | ASTM D3767 | Available in standard gauges or custom-cut to precise requirements for specific applications. |
| Sheet Dimensions | Standard rolls: 1m x 10m, 1.2m x 10m; Sheets: 1m x 1m, 1.2m x 1.2m | N/A | Offered in rolls or cut sheets to suit production and fabrication needs. |
Q: How do I choose the right type of rubber sheet for my application?
A: Selecting the correct rubber sheet involves analyzing several key factors of your application. First, identify the primary function: is it for sealing, cushioning, insulation, or chemical containment? Next, consider the environmental exposures: what temperatures (both high and low) will it face? Will it contact oils, fuels, acids, solvents, or ozone? Also, assess mechanical requirements: is it under constant compression, tension, or abrasion? Finally, consider any regulatory needs like FDA approval for food contact or UL certification for flame resistance. Using the specification tables above as a guide and consulting with Kaxite Sealing's technical team will ensure you select a compound with the optimal balance of properties.
Q: What is the difference between a rubber sheet and a rubber gasket?
A: A rubber sheet is the raw, bulk material—a flat, continuous piece of rubber that can be cut, stamped, or fabricated into various shapes and components. A rubber gasket is a finished product, typically a pre-cut ring, shape, or form specifically designed to create a seal between two mating surfaces, often containing bolt holes or specific contours. Essentially, a rubber gasket is manufactured *from* a rubber sheet. Kaxite Sealing provides both the raw sheet material for in-house fabrication and custom-precisely die-cut gaskets ready for installation.
Q: Can Kaxite Sealing rubber sheets be used for outdoor applications?
A: Yes, but the specific compound must be chosen for outdoor durability. For long-term outdoor exposure to sunlight (UV), ozone, rain, and temperature cycling, EPDM rubber is generally the best choice due to its outstanding weather and ozone resistance. Neoprene (CR) also offers good outdoor performance. Standard Natural Rubber or some NBR compounds may degrade faster when exposed to the elements. Always specify your requirement for "weather resistance" or "outdoor use" when inquiring.
Q: How do I measure the hardness (durometer) of a rubber sheet, and why does it matter?
A: Hardness is measured using a device called a durometer, which presses a standardized indentor into the material under a defined spring force. The depth of indentation correlates to a Shore A scale reading (e.g., 50A, 70A). It matters because hardness influences sealing force, conformability, and load-bearing capacity. A softer sheet (e.g., 40-50A) will conform easily to irregular surfaces for a better seal but may extrude under high pressure. A harder sheet (e.g., 80-90A) provides more structural support and resistance to extrusion but requires higher clamping force to achieve a seal. The ideal hardness is a compromise based on surface finish, flange pressure, and the medium being sealed.
Q: What are the storage and handling recommendations for rubber sheets?
A: Proper storage extends the shelf life of rubber sheets. Store them in a cool, dry, dark place away from direct sunlight, heat sources, and electrical equipment that may generate ozone. Ideal storage temperature is between 10°C and 25°C (50°F and 77°F). Keep sheets away from solvents, oils, and chemicals. Do not store them under tension, compression, or folded in a way that creates a permanent crease. Stack sheets flat if possible. Avoid contact with sharp objects that can cause cuts or nicks. Following these guidelines, Kaxite Sealing rubber sheets will maintain their specified properties for years.
Q: Does Kaxite Sealing offer custom fabrication services?
A: Absolutely. Beyond supplying standard rolls and sheets, Kaxite Sealing provides comprehensive custom fabrication services. This includes precision die-cutting to create gaskets, washers, seals, and complex shapes from your CAD drawings or samples. We also offer slitting, skiving (taper-cutting), splicing, and vulcanization to create endless belts or specific profiles. Our engineering team can work with you to select the optimal material and manufacturing process for your unique application, ensuring performance, cost-effectiveness, and timely delivery.
