303 30340 Aerospace Protectant 16 oz | UV Protectant for Vinyl, Rubber, Plastic & Carbon Fiber

303 30340 Aerospace Protectant 16 oz — Spray-On UV Protectant for Vinyl, Rubber, Plastic, Carbon Fiber & Finished Leather

303 Aerospace Protectant is the industry-standard UV protection and conditioning treatment for marine, automotive, RV, and outdoor surfaces. The spray-on, wipe-dry formula uses powerful UV blockers to prevent fading, cracking, and premature aging on vinyl, rubber, plastic, carbon fiber, and finished leather — the surfaces most vulnerable to UV degradation in on-water and outdoor environments. It restores lost color and luster and dries to a clean, clear matte finish with no greasy residue. The 16 oz size is the smallest in the Aerospace Protectant lineup — ideal for spot treatment, on-board storage, or trying the product before committing to a larger quantity. Same formula as the 128 oz gallon (303-30370).

Part Specifications

• Part Number: 303-30340
• Size: 16 oz spray
• Application Method: Spray on, wipe dry
• Finish: Clear matte — no greasy residue, no glossy sheen
• Safe Surfaces: Vinyl, rubber, plastic, carbon fiber, finished leather
• Protection: UV blocking, fading prevention, cracking prevention, premature aging prevention
• Additional Uses: Fishing gear protection, inflatable boat storage (prevents sticking), marine canvas and upholstery
• Also Available: 128 oz gallon — 303-30370

About 303 Products

303 has been producing specialty vehicle and marine care formulations for over 40 years, with testing conducted in extreme conditions globally. The brand is known for balanced-pH, substrate-safe formulations that deliver professional-grade results across marine, automotive, RV, powersports, and aviation applications. 303 Aerospace Protectant is one of the brand’s flagship products, trusted by boat manufacturers, detailers, and marine professionals for maintaining the appearance and longevity of UV-exposed surfaces in harsh on-water environments.

Application Notes

• Apply to a clean, dry surface — remove dirt and salt residue before application for maximum UV protection bonding
• Spray directly onto the surface or onto a clean applicator cloth; spread evenly and wipe dry with a clean microfiber towel
• No buffing required — product dries to a clear matte finish; wipe off any excess before it dries to prevent streaking
• Safe on vinyl, rubber, plastic, carbon fiber, and finished leather — do not use on unfinished leather, suede, or raw wood
• Do not apply to flooring, pedals, swim platforms, or any surface where reduced traction creates a safety hazard
• For inflatable boat storage: apply to deflated boat surfaces before folding to prevent rubber-to-rubber sticking during off-season storage
• Reapply every 4–8 weeks for maintained UV protection; more frequently in high-UV or salt water environments

Additional Information

• Vendor: 303
• SKU: 303-30340
• Product Type: Boat & Engine Maintenance / UV Protectant
• Size: 16 oz
• Country of Origin: USA
• HS Code: 3405.90 (polishing and protective preparations — verify for your import classification)

Frequently Asked Questions

Q: What surfaces is 303 Aerospace Protectant safe to use on?
A: Safe on vinyl, rubber, plastic, carbon fiber, and finished leather. Common marine applications include vinyl seating, rubber hoses and gaskets, plastic dashboards and trim, carbon fiber components, and finished leather upholstery. Do not use on unfinished leather, suede, raw wood, or traction surfaces.

Q: Will this product make surfaces slippery?
A: Yes — 303 Aerospace Protectant reduces surface friction, which is a safety hazard on flooring, steps, swim platforms, or pedals. Do not apply to any surface where traction is required for safety.

Q: Does this leave a shiny or glossy finish?
A: No — 303 Aerospace Protectant dries to a clear matte finish with no greasy residue or artificial shine. The surface looks restored and conditioned, not coated. This makes it particularly well-suited for carbon fiber, matte vinyl, and rubber surfaces where a glossy protectant would look unnatural.

Q: What’s the difference between the 16 oz and the 128 oz gallon (303-30370)?
A: The formula is identical — only the size differs. The 16 oz (303-30340) is the smallest size, best for spot treatment, on-board storage, or a first-time trial. The 128 oz gallon (303-30370) is the bulk option for detailers, marina service operations, or owners treating large surfaces or multiple vessels regularly.

Q: Can I use this on my inflatable boat or inflatable kayak?
A: Yes — apply to the exterior for UV protection and color restoration. For off-season storage, apply to all rubber surfaces before deflating and folding to prevent rubber panels from bonding together during storage.