Dow Corning® RTV 3145 (3145/3OZ/C) MIL-A-46146 is often used by pilots as an aviation sealant for aircraft repairs on various parts of the airplane including openings and cracks in metal casings. This RTV 3145 adhesive and sealant adheres well to glass, metals, ceramics, silicone rubber, and plastics. It provides thermal stability and remains stable from -50°C to 200°C while offering excellent dielectric properties. RTV 3145 is non-flow and provides primer-less adhesion, vibration resistance, moisture protection, and resistances to thermal and mechanical shock.
- Non-flowing
- Room temperature cure
- High tensile strength and elongation
- Enhanced thermal stability
- MIL-A-46146 Group II/III, TY I
- No mixing required
- RT cure, no ovens required
- Faster in-line processing with optional heat acceleration
- Can be considered for uses with Mil Spec requirements
- Can be considered for uses needing special high temperature stability
Product Codes | |
|---|---|
| Mfr Part No: | DC3138313 |
| MIL SPEC: | MIL-A-46146 |
| ECCN: | EAR99 |
| MIL SPEC: | MIL-A-46146 |
| NSN: | 5970-01-157-9469 |
| SCHEDULE B CODE: | 3506.10.0000 |
Size: 3 ozExtrusion rate: 121 g/minFlow rate: 0.1 in.Tack-free time: 78 minSpecific gravity (cured): 1.12Non volatile content: 96.2%Tensile strength: 1035 psiElongation: 670%Tensile modulus: 150 psiTear strength: 190 ppiShelf life at 25ºC: 12 months
- Stock: Out of Stock - On Backorder
- Manufacturer Part #: DC3138313
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Returns & refund summary
- 30-day return window — with prior return authorization, unopened in original packaging.
- Restocking fee: 20% on unopened items, 30% on open-box items.
- Refund processing fee: 5.51% applies to all refunds (returns, cancellations, core-fee refunds) regardless of reason.
- Return shipping: paid by buyer.
- Non-returnable categories: installed/used parts, special-order or rebuilt items, programmed items (incl. ELTs), batteries, AOG-priority orders, international orders.
Full terms: Return Policy.
Authenticity & authorization
All parts sold by American Aviation Parts are genuine factory products sourced through authorized distribution channels. Our authorization status varies by brand — for some brands we are a direct authorized dealer; for others we are an independent reseller through authorized distribution. Either way, the part you receive is the same factory product, with standard documentation available on request.
See our full Manufacturer Authorizations page for the current per-brand status.
Need traceability paperwork?
If your installation requires FAA Form 8130-3, manufacturer Certificate of Conformance, or other traceability documentation, please call 1-877-722-8727 or email [email protected] before placing the order so we can confirm what is available for this part.
Shipping
Standard ground, expedited, and AOG shipping options are available at checkout. Full shipping-cost tiers and timelines are published on our Delivery Information page.
