LOW DENSITY FILLER WEST SYSTEMS
In stock items ship same or next day.
Free returns on all eligible orders
You have 30 days to request a return. All sale items are final sale.
WEST SYSTEM Low Density Filler is a microballoon-based fairing filler used with WEST SYSTEM epoxy to thicken and create a smooth putty for fairing, filling, and carving.
Key Features
- Low-density, microballoon-based fairing filler for use with WEST SYSTEM epoxy
- Mixes with epoxy to create a “fairing putty” consistency for filling and shaping
- Designed for fairing work—sandable and carveable after cure
Intended Use
- Marine fiberglass repairs and fairing
- Epoxy thickening for non-structural filling and surface shaping
- Sanding and carving fairing putty applications
Product Details
- Product: LOW DENSITY FILLER WEST SYSTEMS
- Product type: Epoxy & Fiberglass Supplies (Filler)
- Variant SKU: 655-C4075
- Brand/product family: WEST SYSTEM 407 Low-Density Filler (fairing filler)
- Use: Mix with WEST SYSTEM epoxy resin/hardener to form a fairing putty, then sand or carve once cured
Parts Desk Insights
Best Use Case: Use this low-density fairing filler when you need a smooth, sandable putty for surface shaping after fiberglass or epoxy repairs—especially for filling low spots and creating fair contours.
Common Issues: For best results, mix to the desired “peanut-butter”/putty consistency and avoid overskipping the fairing steps—rushed application can require extra sanding. Also verify the right WEST SYSTEM resin/hardener pairing for your project before mixing.
Related Products & Accessories
- Filler Selection Guide - Helps choose the correct WEST SYSTEM filler type for fairing vs. bonding/adhesive applications.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 1-3 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.