Metal Detectable Grade Silicone Sheeting
Metal Detectable Grade Silicone Sheeting is a solid silicone elastomer incorporating magnetic detectability, enabling seal fragments to be quickly identified and sequestered in-process through magnetic collection. Designed for food, beverage, dairy, and pharmaceutical processing environments where contamination prevention is critical, the material provides an additional layer of product safety in regulated production lines. Available in 40, 50, 60, and 85 Shore A durometer grades, it is peroxide free, odorless, tasteless, non-toxic, and chemically inert, with an operating range of -85°F to +525°F (intermittent).
Key Properties
- Durometer, Shore “A”: 40 ±5 to 85 ±5 (four grades) — ASTM D2240
- Tensile Strength, psi: 1050–1250 (varies by grade) — ASTM D412
- Elongation, %: 100–800 (varies by grade) — ASTM D412
- Tear, ppi Die “B”: 100–190 (varies by grade) — ASTM D624
- Magnet Pull Test: 4 kg maximum pull (20.5 mm diameter magnet)
- Service Temperature: -85°F to +525°F (intermittent)
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- Specifications
- Applications
- General Info
- FAQs
Physical Properties
| Property | Test Method | 40 Duro | 50 Duro | 60 Duro | 85 Duro |
| Specific Gravity, g/cc | ASTM D297 | 1.29 | 1.31 | 1.36 | 1.56 |
| Durometer, Shore “A” | ASTM D2240 | 40 ±5 | 50 ±5 | 60 ±5 | 85 ±5 |
| Tensile Strength, psi | ASTM D412 | 1100 | 1050 | 1250 | 1050 |
| Elongation, % | ASTM D412 | 800 | 700 | 800 | 100 |
| Tear, ppi Die “B” | ASTM D624 | 130 | 130 | 190 | 100 |
Detectability
| Property | Test Method | Value |
| Magnet Pull Test | 20.5 mm diameter magnet | 4 kg maximum pull |
Compliance
- FDA Title 21 CFR 177.2600 — Compliant
- Food and beverage processing seals and gaskets where magnetic detectability of seal fragments is required
- Dairy equipment sealing in contamination-critical production environments
- Pharmaceutical processing gaskets requiring FDA-compliant, detectable sealing materials
- High-temperature food-contact sealing components in steam-in-place and clean-in-place processing lines
- Contamination-critical die-cut gaskets for regulated production lines requiring fragment recovery capability
Common industries: Food processing, beverage manufacturing, dairy, pharmaceutical processing, life sciences.
Metal Detectable Grade Silicone Sheeting is a solid silicone elastomer incorporating a magnetic compound that enables seal fragments to be detected and recovered in-process using standard magnetic separation equipment.
In food, beverage, dairy, and pharmaceutical processing lines, seal and gasket failure is a contamination risk — standard silicone fragments are invisible to conventional metal detection systems and can pass undetected through the production stream.
Metal Detectable Grade Silicone Sheeting fragments are recoverable via a 20.5 mm diameter magnet with a maximum pull of 4 kg, enabling rapid fragment sequestration and reducing the risk of contaminated product reaching end consumers or patients.
The material is peroxide free, odorless, and tasteless, with FDA compliance per Title 21 CFR 177.2600, and is available in four durometer grades across thicknesses from .010″ to .500″ in various opaque colors and widths up to 60″.
Metal Detectable Grade Silicone Sheeting is formulated from high-quality certified raw materials and is non-toxic and chemically inert in its cured state — properties consistent with direct food-contact sealing applications. The material is UV and ozone resistant and rated for service from -85°F to +525°F (intermittent), supporting use in high-temperature processing environments such as steam-in-place and clean-in-place production lines.
The 85 Shore A grade is the firmest option in the product line, with reduced elongation (100%) reflecting its harder formulation; the 40 Shore A grade provides the highest elongation (800%) for conformable sealing under lower clamping loads.
Compliant with FDA Title 21 CFR 177.2600.
What differentiates Metal Detectable Grade Silicone Sheeting from standard FDA-compliant silicone sheeting?
Standard FDA-compliant silicone sheeting meets food-contact regulatory requirements but is not detectable by conventional metal detection or magnetic separation equipment. Metal Detectable Grade Silicone Sheeting incorporates a magnetic compound that enables fragments to be recovered via a 20.5 mm diameter magnet at a maximum pull of 4 kg — providing a contamination control capability that standard silicone grades cannot offer. This is critical in food, dairy, and pharmaceutical processing lines where undetected seal fragments in the product stream create safety, regulatory, and recall risks.
Why does magnetic detectability matter in food and pharmaceutical processing?
Seal and gasket degradation is a normal maintenance consideration in processing environments — but when fragments of a failed seal enter the product stream, the consequences depend entirely on whether those fragments can be detected and removed. Standard silicone is invisible to metal detectors and passes through magnetic separators. Metal Detectable Grade Silicone Sheeting's magnetic compound allows it to be captured by inline magnetic separation equipment at the specified pull force, enabling plant operators to detect a contamination event and quarantine the affected product rather than allowing it to reach distribution.
What is the operating temperature range for Metal Detectable Grade Silicone Sheeting?
-85°F to +525°F (intermittent), as listed on the TDS.
Is Metal Detectable Grade Silicone Sheeting suitable for food-contact applications?
Yes. Metal Detectable Grade Silicone Sheeting is FDA compliant per FDA Title 21 CFR 177.2600, which covers rubber articles intended for repeated use in contact with food. The cured material is non-toxic, chemically inert, peroxide free, odorless, and tasteless.
How should Metal Detectable Grade Silicone Sheeting be specified?
Specify Metal Detectable Grade Silicone Sheeting, durometer (40, 50, 60, or 85 Shore A), thickness, color, compliance requirement (FDA Title 21 CFR 177.2600), dimensional tolerances, and finished format.
