Platinum Prime 4:1 2K Urethane High Build Primer & Sealer GALLON Kit + Hardener!

Brand: Platinum Primer

Type: Urethane Primer

Warranty: No Warranty

Unit Type: gal

Color: Gray

Items Included: Activator/Hardener,Primer/Sealer

Manufacturer Part Number: PBP-41

Unit Quantity: 1 Gallon

Country/Region of Manufacture: United States

Platinum Prime 4:1 2K Urethane High Build Primer & Sealer – GALLON Kit + Hardener!

Professional-grade Platinum Prime (PBP-41) is a premium 2K high-build acrylic urethane primer designed for outstanding performance in automotive, restoration, and industrial applications. This versatile product excels as both a high-build sandable primer (mixed 4:1) and a wet-on-wet 2K sealer (mixed 4:1:1 with reducer). Whether you're a DIY enthusiast tackling a project in your garage or a professional painter demanding high productivity and flawless results, this primer is user-friendly and delivers exceptional holdout, easy sanding, and minimal shrinkage.

Key Features & Benefits:

• Light gray color for quick opacity with fewer coats
• Excellent filling of body repairs, scratches, sand scratches, and minor imperfections
• Superior sandability and holdout for a smooth, professional base
• High production speed – ideal when time and quality matter
• DIY friendly yet trusted by pros for reliable, consistent results
• Minimal shrinkage for long-lasting, durable finishes
• Bonus compatibility: The same hardeners (Fast, Medium, Slow) work perfectly with Platinum 4:1 High Gloss Clear – stock up on one hardener for both your primer/sealer and clearcoat applications!

Versatile Mixing Options:

• As a Primer (4:1): 4 parts Platinum Prime (PBP-41) to 1 part selected hardener
• As a Sealer (4:1:1): 4 parts Platinum Prime (PBP-41) to 1 part selected hardener + 1 part selected reducer

Hardeners Available – Choose Your Speed! Select your preferred hardener directly from the Variation dropdown/tab before adding to cart or purchasing:

• Fast Hardener (PBF-41) – great for warmer conditions or faster production
• Medium Hardener (PBM-41) – default, versatile for most applications
• Slow Hardener (PBS-41) – ideal for cooler temps or extended working time

Suggested Uses:

Perfect as a wet-on-wet sealer or full-bodied sandable primer where filling and excellent surface preparation are needed. Best when minimal shrinkage, top-tier sandability, holdout, and high productivity are priorities.

Application Details:

• Apply 1–3 medium wet coats, flash 10–20 minutes between coats
• Recommended equipment:
  • HVLP Gravity Feed: 1.4–1.7mm tip/needle
  • Pressure Pot HVLP: 1.0–1.2mm tip/needle
  • Air Assist Airless: 1.0–1.2mm tip/needle

Dry Times (at 68°F / 20°C):

• Dust Free: 10 minutes
• Dry to Touch: 20 minutes
• Dry to Sand: 1 hour per coat
• Force Dry: 20 minutes at 140°F (60°C) – sand before topcoating

Technical Specifications:

• VOC: Regulatory 577.68 g/L (4.82 lbs/gal) | Actual 579.4 g/L (4.8 lbs/gal)
• Solids: By Volume 33.8% | By Weight 55.6%
• Specific Gravity: 10.9 lbs/gal (1.3 kg/L)
• Coverage: Approx. 280 sq ft per gallon at 100% transfer efficiency, 50 microns (2 mils) dry film thickness
• Repainting: After 48 hours at 68°F (20°C), light sanding recommended
• Storage: 1 year in closed original packaging, cool/dry place away from heat

This complete gallon kit includes the Platinum Prime primer base (PBP-41) + your choice of hardener – everything you need for professional-grade results. Made in the USA for quality you can trust.

Ready to prime like a pro? Select your hardener variation and grab your Platinum Prime kit today – fast shipping and great for auto body work, custom paints, restorations, and more! Questions? Message us – happy to help.

Additional Platinum Product Links

Explore our full range of premium Platinum automotive products below. Each link directs to high-quality options tailored for professional results. Select your preferred speed or size for optimal performance.

Platinum Reducers (Gallon & Quart Sizes)

Click Here For Platinum Reducer Quart Size (Fast, Medium, & Slow) (Choose your Reducer: Slow,Medium or Fast)

Click Here For Platinum Medium Reducer (Gallon Size)

Click Here For All Speeds Universal Reducer Gallon Size (Choose your Reducer: Slow,Medium or Fast)

Click Here For Platinum 100% Virgin Lacquer Thinner (Quart Size)

Platinum Clear Coats (Gallon & Quart Sizes)

Click Here For Platinum Euro Clear Coat 2:1 7.5 Liter Kit (Choose your Hardener: Slow,Medium or Fast)

Click Here For Platinum Clear Coat 4:1 Gallon Kit (Choose your Hardener: Slow,Medium or Fast)

Click Here For Platinum Clear Coat 4:1 Quart Kit (Choose your Hardener: Slow,Medium or Fast)

Click Here For Platinum Clear Coat 2:1 Quart Kit (Choose your Hardener: Slow,Medium or Fast)

Click Here For Platinum Speed Clear 4:1 Quart Kit

Click Here For PlatinumX Clear Coat 4:1 Quart Kit

Click Here For PlatinumX Clear Coat 4:1 Gallon Kit

Platinum 2K Primers (Gallon & Quart Size Kits)

Click Here For Platinum Prime 4:1 Quart Kit (Choose your Hardener: Slow,Medium or Fast)

Click Here For Platinum Prime 4:1 Gallon Kit (Choose your Hardener: Slow,Medium or Fast)

Click Here For Platinum 4:1 DTM Primer Quart Kit

Click Here For Platinum 4:1 DTM Primer Gallon Kit

Platinum 1K Sealers (Gallon, Quart, & Pint Sizes)

Click Here For Platinum 1k Sealer Ready To Spray (Pint Size) (Available in Black, White & Gray)

Click Here For Platinum 1k Sealer Ready To Spray (Quart Size) (Available in Black, White & Gray)

Click Here For Platinum 1K Sealer Ready To Spray (Gallon Size) (Available in Black, White & Gray)

Platinum 2K Epoxy Primers (Gallon & Quart Size Kits)

Click Here For Platinum 2K Epoxy Primer (Quart Size Kit) coming soon

Click Here For Platinum 2K Epoxy Primer (Gallon Size Kit) coming soon

Platinum Wax & Grease Remover (Quart Size)

Click Here For Platinum Wax & Grease Remover Quart Size

Platinum Color Blender (Quart Size)

Click Here For Platinum Blend (Quart Size)

Click Here For Platinum Blend 2 Pack (Quart Size)

Platinum Adhesion Promoter (Quart Size)

Click Here For Platinum Grip Adhesion Promoter (Quart Size)

Click Here For Platinum Grip Adhesion Promoter 2 Pack (Quart Size)