Solid silicone seals are fully dense elastomers with high tensile strength, low compression set, and excellent liquid/gas sealing, making them ideal for high-pressure, precision, and IP67+ applications. Sponge silicone seals have a closed-cell structure that compresses easily with low force, absorbs vibration, and conforms to uneven surfaces, but they are not suited to high-pressure fl...

For most custom silicone seals, the best Shore hardness range is 40-60 Shore A. Choose 30-40 Shore A for low-pressure, high-conformity seals; 50-60 Shore A for general industrial and dynamic applications; and 60-70 Shore A for higher pressure or structural support. The final choice depends on compression available in the groove, operating temperature, media exposure, and whether the se...

Ordering custom silicone rubber seals starts with a complete technical package: 2D/3D drawings, material specification, hardness, working temperature, pressure, media exposure, and regulatory requirements. Most manufacturers need 3-5 days for DFM and quotation, 15-25 days for tooling, and 10-20 days for first-article production. FromRubber accepts STEP, IGES, STL, or PDF drawings and r...

Designing a custom silicone case for consumer electronics starts with matching the protection level to the device, then controlling wall thickness, draft angles, parting lines, and material hardness. A well-designed case typically uses 0.8-1.5 mm uniform walls, 1-3 degrees of draft, rounded internal corners, and a Shore A 40-60 silicone compound. FromRubber's DFM team reviews every CAD...

Custom food-contact silicone cases need test reports against FDA 21 CFR 177.2600 for the US market and LFGB (with EU Regulation 1935/2004 and REACH) for Europe — ideally both. FDA verifies extractable limits with food-simulating solvents; LFGB is stricter, adding overall migration limits (10 mg/dm2), volatile organic matter (max 0.5%), and a sensory odor-and-taste test. Neither regulat...

Yes. Custom food-grade silicone cases and lid covers can be fully branded for your product line: custom shapes and sizes from your 3D file, Pantone-matched body and accent colors, logos applied by debossing, embossing, screen printing, or laser engraving, and retail-ready private-label packaging. Typical MOQ runs 500-1,000 pieces per design with 25-35 day production after sample approv...

Compression molded silicone rubber parts typically achieve dimensional tolerances of plus or minus 0.10 to 0.50 mm depending on part size, following ISO 3302-1 tolerance classes M1 through M4. In practice, compression molding reliably holds M3 (commercial) tolerance as default, M2 (precision) for small-to-medium parts with good molds, and M1 only for exceptional cases with ground molds...

A reliable custom molded silicone parts manufacturer can be identified by five verifiable markers: current ISO 9001 (plus industry-specific certifications like ISO 13485 or IATF 16949), in-house mold making, a documented quality control lab with testing equipment, transparent communication with DFM feedback, and traceable material documentation. Verify each marker with evidence — audit...

Silicone compression molding is a manufacturing process where solid high-consistency rubber (HCR) silicone is placed in a heated mold cavity and compressed under high pressure (160-180 degrees C, 5-15 MPa) until it cross-links and cures into the final part shape. It is best suited for low-to-medium volume silicone parts (500-50,000 pieces) including seals, gaskets, keypads, gro...

How Much Do Custom Silicone Keypads Cost? Custom silicone keypad pricing breaks into two components: a one-time tooling investment and a recurring per-unit production cost. Here is what you can expect to pay. Tooling & Mold Cost $1,500 – $5,000 One-time mold fabrication. Simple 1-2 cavity aluminum molds start at $1,500. Multi-cavity steel molds for high-volume production range up to $5,000. ...

Specifying the correct lens silicone sealing rings for underwater drone cameras is a mission-critical task. A poor seal means water ingress, ruined optics, and expensive ROV downtime. This guide walks you through the engineering parameters, material choices, and testing requirements — helping you source reliable seals from FromRubber. Underwater drones (ROVs) operate...

Common Industry Question · Answered by FromRubber Short answer: No, not all lens silicone O-rings are created equal. While silicone rubber generally offers moderate resistance to solvents like isopropyl alcohol (IPA) and poor resistance to acetone, the exact formulation, curing method, and additive package dramatically affect real-world compatibility. For optical p...

Anodizing is a precision electrochemical process that transforms aluminum surfaces into durable, corrosion-resistant finishes. But one small masking failure — a cap that lifts, leaks, or contaminates — can ruin an entire batch. FromRubber’s silicone masking plugs are engineered specifically for anodizing lines: they withstand aggres...

Choosing the correct durometer (hardness) for your exhaust hose plug is not a guess—it is an engineering decision that directly impacts sealing reliability, insertion ergonomics, and service life. At FromRubber, we manufacture custom silicone exhaust plugs designed to withstand extreme temperatures while delivering...

Silicone (yellowed, cracked) vs. FromRubber UV/heat stabilised formula FromRubber — silicone compounding & precision manufacturing Why silicone turns yellow & brittle: the polymer science behind aging Silicone rubber is celebrated for flexibility and heat resistance, yet after months or years, parts can discolour...

WEATHERING RESISTANCE Will standard silicone gaskets discolor or crack when exposed to UV sunlight & ozone? A complete technical analysis of silicone’s stability under solar radiation and atmospheric ozone — with real‑world data. ...

material science insight Tensile Strength & Tear Resistancesilicone seals vs FKM seals Understanding these critical mechanical properties helps engineers select the optimal sealing material for extreme environme...

At Fromrubber, we receive this question daily: "Is silicone rubber gasket resistant to oil and fuel, or will it swell and fail?" The short answer: standard silicone performs poorly with hydrocarbons. But the full story involves material grades, application conditions, and engineered solutions. 1. The Chemistry: Why Silicone Swells in Oil ...

For engineers and procurement specialists: choosing between silicone and EPDM for outdoor sealing directly impacts product lifespan, warranty costs, and performance under UV, ozone, and temperature extremes. This deep-dive reveals the decisive factors. 1. Chemical & Temperature Boundaries Silicone (VMQ)...