Skip to content
← Southern Polyurethanes / Automotive Products
Southern Polyurethanes · Automotive Products

SPI 2K Sealer

A black two-component sealer from the Southern Polyurethanes automotive refinishing range.

Selected option

BLACK-QT · 6403-4

View all 3 options ↓
SPI 2K SEALER BLACK-QT product image
SPI 2K Sealer
THE MANUFACTURERSouthern Polyurethanes

Good products.
Local knowledge.

THE RIGHT START MATTERS

KNOW THE
PROJECT.
PLAN THE
DETAILS.

A black two-component sealer from the Southern Polyurethanes automotive refinishing range.

Start with the surface, the existing finish and the way the space or equipment is used. Our team can help you work through product choices and the requirements for your project.

Get into the details
SPI 2K SEALER BLACK-QT product image
A closer look at SPI 2K SEALER BLACK-QTProduct image. Confirm the model, finish and current packaging with our team.
01 / CHECK

The project.

Identify the material, its condition and the work you’re planning.

02 / PLAN

The system.

Confirm product suitability, preparation and compatibility with our team.

03 / CONFIRM

The conditions.

Check the current manufacturer instructions for application, installation or maintenance requirements.

PRODUCT SPECIFICATIONS

THE DETAILS.
ALL HERE.

Keep the technical information close.
Use the current manufacturer documents when planning the work.

SPI 2K SEALER BLACK-QT product specifications
ManufacturerSouthern Polyurethanes
Product nameSPI 2K SEALER BLACK-QT
Inventory descriptionSPI 2K SEALER BLACK-QT
Unit / packageQuart
Product number6403-4
Manufacturer product number6403-4
CHOOSE YOUR FORMAT

Formats & options

Choose an option to view its specifications and documents.

3 available options

Product images are shown for reference; packaging and options may differ from your selection.

Full product details, applications & manufacturer specifications

A black two-component sealer from the Southern Polyurethanes automotive refinishing range.

About this product range

SPI 2K Urethane Sealer is a 2.1 VOC undercoat for prepared refinishing surfaces. Mix 4:1:1 primer, activator and suitable urethane reducer; the manual permits up to 4:1:2 for spraying needs. It may also be used as a 2K primer at 4:1 without reducer. Do not apply it over bare metal. Apply one wet sealer coat and allow 10 minutes to 2 hours before colour for best results; after 4 hours it must be sanded. Sanding imperfections may be possible after 15–30 minutes, depending on temperature and reducer.

Selected product & format

Manufacturer product name
SPI 2K SEALER BLACK-QT
Manufacturer product number
6403-4
Selling unit
Quart
Manufacturer
Southern Polyurethanes
Product name
SPI 2K SEALER BLACK-QT
Inventory description
SPI 2K SEALER BLACK-QT
Unit / package
Quart
Product number
6403-4
Manufacturer product number
6403-4

Complete your project.

Companion products for the selected product and system.

  • 3M™ Performance Green Masking Tape 233+

    Mask adjacent vehicle surfaces before refinishing.

    Use as a removable masking accessory on a suitable clean, dry surface. Check adhesion first, follow the coating’s masking and drying instructions, and stay within the tape temperature and removal limits.

  • 3M™ Scotchblok™ Masking Paper

    Protect adjacent panels from paint overspray.

    For automotive paint masking with suitable tape. Keep the paper outside the coated area and within its stated bake-temperature limit; follow the coating technical sheet.

Explore related categories

SUPERIOR COATINGS / THUNDER BAY

BIG PROJECT?
LET’S TALK.

Share the surface, its condition and what it needs to stand up to. We’ll help you work through the product choices and preparation.

Ask about SPI 2K Sealer
VISIT SUPERIOR COATINGS

Find us in Thunder Bay.

550 Fort William Road
Thunder Bay, Ontario

Call 807-345-4511 ↗

550 Fort William Road, Thunder Bay

Compare your products

Ask our team ↗

Swipe across to compare products. Detail labels stay visible.

Check official product documents and confirm suitability with our team.

YOUR IDEAS, TOGETHER

My Projects

YOUR PROJECTS, WHEREVER YOU ARE

Keep your plans close.

Create a free account to pick up your projects on another device. Your saved colours, products and notes come with you.

How saved projects and account information work (opens in a new tab)