Sika Sikaflex NP 1 Stone 20oz Sausage

Sikaflex NP 1 is a one-component elastomeric polyurethane sealant in a 20 oz sausage. It is used on moving joints and acoustical partitions.

Skins overnight or within 24 hours
Green concrete up to 72 hours after pour
18-month sausage shelf life

$13.22

Availability: Out of stock

Details

Sikaflex NP 1 Stone, 20 oz sausage

Sikaflex NP 1 is a one-component, moisture-curing, non-priming elastomeric polyurethane sealant. It is used on interior and exterior expansion joints, window frames, storefronts, roofing, fascia, and acoustical partitions. It can be placed on green concrete up to 72 hours after the pour with Primer-173, and it skins overnight or within 24 hours. Full cure is about one week.

Key Features

One-component moisture-curing polyurethane
Typically no primer on concrete and masonry
Acoustical seal for partition perimeters
Skins overnight or within 24 hours
±35% movement capability

Applications

Interior and exterior expansion joints.
Window frames and storefront assemblies.
Roofing, fascia, and parapets.
Acoustical partitions.
Green concrete up to 72 hours after pour.

Technical Specifications

Property	Value
Skin	overnight or within 24 hours (75 F / 50% RH)
Full cure	about 1 week
Green concrete	up to 72 hours after pour (Primer-173)
Immersion	21 days
Joint depth	1/4 to 1/2 inch
Movement	±35%
Service temperature	-40 to 180 F
Sound transmission	44 dB
Shelf life, sausage	18 months
ASTM C920	Type S, Grade NS, Class 35

Documents

Sikaflex NP 1 Product Data Sheet

Frequently Asked Questions

Where is Sikaflex NP 1 used?
Interior and exterior expansion joints, window frames, storefronts, roofing, fascia, parapets, and acoustical partitions.

How soon can Sikaflex NP 1 be applied to green concrete?
Up to 72 hours after the pour. Primer-173 must be used.

What is the skin time of Sikaflex NP 1?
Typical skin time is overnight or within 24 hours at 75 F and 50% RH.

How soon can Sikaflex NP 1 be immersed?
Wait 21 days at 70 F and 50% RH before water immersion.

What is the shelf life of Sikaflex NP 1 in a sausage?
18 months in the original unopened sausage.

What is the UV discoloration of Sikaflex NP 1?
It is an aromatic urethane and may discolor over time with UV exposure.

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