Collinite 631 Machine Polishing Compount, 16 oz.
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Collinite No. 631 Fleetcut Machine Polishing Compound combines compounding and polishing in one step for marine surfaces. Engineered abrasives help cut moderate to heavy defects while leaving a professional, mirror finish—supporting follow-up with Collinite protective wax coatings.
Key Features
- Compound + polish in one product
- Cuts quickly to eliminate moderate to heavy defects such as oxidation, minor scratches, swirls, stains, and compound haze from fiberglass and gel coat
- Designed for machine use (rotary for cutting, DA for polishing)
- Engineered abrasives and nourishing oils help leave a mirror finish
- Helps facilitate easy application of Collinite protective wax coatings; supports wax bond, spread, and durability
- Average spread/coverage: 250–500 sq feet
- Marine detailing use
- Not designed for use on anodized aluminum, clear coat paint, plastic, or glass
Intended Use
- Marine detailing and restoration for fiberglass and gel coat surfaces
- Machine polishing/compounding workflows (rotary for cutting, DA for polishing)
Product Details
- Product: Collinite 631 Machine Polishing Compount, 16 oz.
- Part/SKU: 244-631
- Size/quantity: 16 oz (16 fl oz per product page details)
- Coverage: Average Spread/Coverage: 250–500 sq feet
- Recommended use: Machine application (rotary for cutting; DA for polishing)
- Avoid use on: anodized aluminum, clear coat paint, plastic, or glass
- Note: Always test product first in a small, inconspicuous area to confirm desired results.
Parts Desk Insights
Best Use Case: Best suited for boat fiberglass/gel coat oxidation and visible surface imperfections where you want a quick cut followed by a high-gloss polishing finish in the machine workflow.
Common Issues: Using on incompatible substrates (anodized aluminum, clear coat paint, plastic, glass) can lead to poor results. If you’re chasing heavier hazing/oxidation, don’t skip test spots—choose the appropriate pad (cutting vs polishing) and keep the working area controlled to avoid uneven finish or excessive rework.
Related Products & Accessories
- Browse related Collinite marine cleaning & polishing products - Use the store collection for additional compounds, cleaners, and prep steps that pair with machine polishing.
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.