/ BASF MasterSeal NP 1 Caulk, NP 2 Caulking Sealant from Best Materials

BASF MasterSeal NP1 and NP2 Sealants

MasterSeal NP1

NP1 and NP2 are the industries most popular high-performance vertical grade sealants for exterior applications. SL1 and SL2 are the self-leveling versions for expansion joints on grade (horizontal joints). These are high performance moisture-curing polyurethanes. NP1 and NP1 are designed for sealing / caulking all types of active exterior construction joints.

NP1 caulk sealant requires no mixing and bonds to most construction materials without a primer, including concrete, masonry, wood and most metals. NP-2 is a color tintable 3-part sealant which accommodates up to 2" joints with +/- 50% joint movement. NP2 is available in 22 standard colors and up to 470 custom color choices.

Is BASF MasterSeal NP1 the same as BASF Sonneborn NP1?

During late 2014 BASF changed branding from Sonolastic Sonneborn NP1 to Master Builders MasterSeal NP1. It is the same product.

Questions? Email Sales@bestmaterials.com
Or call 1-800-474-7570 / 602-272-8128
You'll get a prompt response !




np1MasterSeal NP-1 <- Click Links

MasterSeal NP-2


More MasterSeal Information:

NP-1 Product Data Sheet

NP-2 Product Data Sheet

SL-1 Product Data Sheet

Leeds Certificationnp1

Standard Colors


NP-1 Primary Uses: Interior or Exterior sealant. Its is the toughest most durable sealant, and suitable for all common construction materials, including: Concrete / masonry, aluminum, wood and wood window frames, expansion wall joints, curtain wall construction, panel walls, pre-cast units, fascia, parapets, structural components, siding.


NP-1 and NP-2 Features: np1
- NP-1: +/- 35% joint movement capability, up to 1-inch.
     NP1 has 800% Elongation with 350 PSI Tensile.
- NP-2: +/-50% movement, up to 2-inch joint; Color Tintable
     NP2 has 280% Elongation with 160 PSI tensile.
- Both are available in 10.1 oz. cartridges, 
     20 oz. Sausages, and 1-1/2 to 5 Gallon pails.
- Easy to gun and tool.
- Popular colors.
- Fully Paintable.
- Bonds to most construction materials without a primer.
    733 Primer is recommended on chalky or difficult surfaces. NP2 Tintable, Quick-Cure, Polyurethant Sealant, 1.5G (w/o tint)
- Fire Resistant: UL Rated, Passes 4 hour when used with
   mineral wool.
- USDA Compliant for use in meat and poultry area.
- Extremely Weather resistant.
- Wide range of application temperatures.
- Long-lasting weather-tight seals.
- Suitable for all climates.
- Both are generally used together with Backer Rod.

NP-2 (BASF MasterSeal 900) is a color-tintable sealant. It can also accommodate joints up to 2" wide with +/- 50% joint movement, but has lower tensile strength. NP-2 can also be accelerated for quicker cure or to apply down to 20F. Its also great for color matching exterior colors on window frames, stucco, expansion joints, etc. 


NP-1, NP-2 Colors:NP1 Propak, K 20 OZ. SAUSAGE PACK in all colors

NP-1 is pre-tinted in 11 standard colors. We stock the complete line of standard colors including white, off-white, limestone, stone, tan, aluminum grey, medium bronze, special bronze, redwood tan, and black.


MasterSeal NP-2 has 22 standard colors (Standard BASF Color-Pack Chart) which cost lower per pack than the 470 Custom Colors. You can order Custom Color Tint Packs for MasterSeal NP2 and SL-2 on our website.


NP1 Packaging:

20 oz (590 ml) Sausages, 20 Sausages/Case.
10.1 oz (300 ml) Tubes, 30 Tubes/Case;
1440 Tubes/30 Cases/Pallet.


NP2 Packaging:

1.5 and 3 gallon metal pails. 2 parts are packed in the pails. Color packs are separate.


SL1 / SL2 Products: These are self-leveling versions of the NP1 and NP2 products. Used for horizontal expansion joints. We have a full selection HERE.


Related Sealant Products & Tools:
   Backer Rod   (Use in wide and deep  joints before sealing / caulking).
   Backer Rod Insertion ToolsEvery Type of Quality Caulking Gun on Sale. Bulk, Quart, 2-Part and more
   Blades, Saw Blades (for joint removal, crack
   Caulking Guns All types
       Caulking Guns, 10 Oz
       Caulking Guns, 1-Quart
       Caulking Guns, Bulk Load
           Caulk Bulk Loading Tools, Follow Plates
       Caulking Guns, Multi-Component
       Caulking Guns, Sausage
       Caulking Guns, Stand-up / Extended Reach
           Caulking Guns Albion Catalog
           Caulking Guns Newborn Catalog
   Caulk Tube Extension Nozzles & Angle TipsAll kinds of tube extensions and angles for great caulking
   Concrete Vapor Barriers, Moisture Barrier Products
   Crack Fillers, Control Joint Fillers
   Cut-Out Tools for Removing Old Joint Sealants
   Expansion Joint Products  (covers & seals for
     roof-to-wall expansion joints, curb mount / curb
     flange expansion joints, corner and crossover
     expansion joint covers, and straight flange
     expansion joint covers).
   Primers  (specialty primers for use with sealants).
   Scraping Tools / Cut-Out Knifes  (joint scrapers /
     caulk-removal tools).
   Saw Blades / Tuck-Point Blades (for cleaning joints or crack chasing).
   Spatulas / Joint Finishing Tools (professional grade joint tools).

Show More Popular Products and Suppliers:

Popular Products and Pages:

Access Panels Adhesives, Backer Rod, Brads, Butyl Rubber, Caulk & Sealants, Caulk Guns, Caulking Gun Accessories, Caulk Gun, Bulk, Chem Curbs, Chinking, Coil Roofing Nails, Concrete Anchors, Concrete Products, Concrete Repair, Concrete Stain & Sealer, Confined Space Rescue, Deck Coatings, Deck Hardware, Diamond Saw Blades, Drains, Drains-Balcony>Drain-Balcony, Drain Downspouts / Nozzles, Roof Drain Domes, Drains New-Roof, Drains-Retrofit / Reroof, Electric Hot Air Welders, Electric Service Flashings, EPDM Accessories, Eternabond, Expansion Joints, Fall Protection Kits, Fasteners, Fire Stopping Vents, Flashing Tape, Foam Roofing, Gas & Safety Cans, Generators, Grouts, Hidden, Deck Fasteners, Hot Dipped Roofing Nails, Hot Tar Kettles, Houseboat Roof/Deck Repair, Knowledgebase, Log Home Products, Lead Pipe Flashings, Lead Sheet, Lifelines- Retractables, Magnetic Hammers, Metal Roofing, Miami-Dade Nails, Mortars, Narrow Crown Stainless, Staples, NP1, Polyurethane Foam, Pipe Flashings, Pipe Supports, Power Tools & Accessories, Propane Hot Air Welders, Propane Regulators, Propane Torches, PVC Roofing, Retrofit Pipe Flashings, Rex Synfelt, Rigging/Lifting Hardware, Rivets, Rivets- Stainless, Roof Anchors, Roof Equipment Hatch, Roof Smoke Vents, Roof Hatch, Roof Leak Repair, Roof Paints & Coatings, Roof Repair Materials, Roof Screws, Roofing Fasteners, Roofing Nails, Rooftop Electrical Flashings, Rope, RV & Trailer Roof Repair, RV Roof Replacement, Safety Rail Systems, Saw Blades, Sealants, Sealing Washers, Snow Guards, Spray Polyurethane Foam, Stinger, Stainless Nails/Fasteners, Tarps, TPO Accessories, Underlayments, Vents, Roof Vents, Video Movies, Waterproofing Products, Window Flashing Tape, Wood Deck Hardware, Zinc Sheet

Popular Suppliers Include:

ACRO, Active Ventilation, AES Epoxies, AES Raptor, AJC, Albion, Alcoa/Marson, All Line, Alpha ProTech, American Sealants, Applied Technologies, ASI Products, Attic Breeze, Aztec Washer, Babcock- Davis, BAK Welders, BASF, Berger, Berry Plastics, Biltrite, Brentwood, Brewer, CEP, Chem Link, Cleasby, CME Manufacturing, CPR, Deks, Dow, Eagle, EagleView, Erin Rope, ES Products, Eternabond, Everhard, Falltech, Flame Engineering, Flashco, Foxy, Franklin / Titebond, Fry Reglet, Greenstreak, GSSI, Guardian, Harpster, HY-C, Interwrap, ITP, ITW, Jaaco, JL Industries, Josam, Karnak, Levis, LionGuard, LSP, Lucas, Luco, Makita, Marathon, Marshalltown, Maze Nails, MEC, MFM, Miro, MM Products, National Nail, Natural Light, Newborn, OMG, Pam Fasteners, Pearl, Polar Blox, Polycoat, Portals Plus, Powers Fasteners, Prime Source, ProTech, Protecto Wrap, Pylex, Quarrix, QuickMount, RHH Foam, Robetex, Roofmaster, RoofTop Products, Senco, SFS Intec, Sievert, Simpson Strong-Tie, Smith, Sno Gem, Solomon, Sonneborn, Steelhead, SunRise Solar, Sunset, Super Anchor, Surebond, Swan Secure, TRA, Trufast, United / Quest, Vulcan, Wade, Watts, Weatherbond, Werner, Western Colloid, Winco, Zurn

A CSG Group Company

Shop with
Peace of Mind!