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Sika Part# 221-W

Sikaflex® 221 - White, 10.3 oz.

$16.3800

Sikaflex 221, WHITE, 10.3 oz. tube. High-performance, fast-curing, general-purpose polyurethane-based sealant. Remains permanently elastic. For use on aluminum, steel, wood, fiberglass and zinc-coated steel.

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A white, high performance, polyurethane-based sealant, 10.3 oz that remains permanently elastic and is ideal for sealing materials and dissimilar coefficients of expansion. For use on aluminum, steel, wood, fiberglass and zinc-coated steel. General purpose, fast curing. This versatile polyurethane product is the most popular adhesive/sealant in the transportation industry. It is an excellent sealer and can handle many light bonding applications. Sikaflex® -221 is a high-quality multipurpose non-sag 1-c polyurethane sealant that cures on exposure to atmospheric humidity to form a durable elastomer. Meets approvals ASTM C920 types and Federal Specifications TT-S-00230C. Sikaflex® -221 is tested and classified in accordance with ANSI/UL 723 “Test for Surface Burning Characteristics of Building Materials”. Sikaflex® -221 is manufactured in accordance with ISO 9001 / 14001 quality assurance system and the Responsible Care Program.

Product Benefits

- 1-C formulation
- Elastic
- Low odor
- Resistant to weathering exposure
- Non-corrosive - Can be overpainted
- Can be sanded
- Lower VOC’s
- Bonds well to a wide variety of substrates
- NSF registered, Proprietary Substances and Nonfood Compounds

Areas of Application

Sikaflex® -221 bonds well to a wide variety of substrates and is suitable for making permanent elastic seals of high adhesive strength. Suitable substrate materials are wood, metals, metal primers and paint coatings (2-c systems), ceramic materials and plastics. Before using on transparent and pigmented materials that are prone to stress cracking, contact the Technical Service Department of Sika Industry at tsmh@us.sika.com. This product is suitable for experienced professional users only. Tests with actual substrates and conditions have to be performed to ensure adhesion and material compatibility.

PDS Sheet

Weight:
0.9600 LBS
Catalog:
Click Here
PDS:
Click Here
Color:
White
Show Options Price Differential:
Female
Pack Size:
Each
UOM:
EA
Product Line:
SikaFlex®
Lock-In / Lock-Out:
No
Grease Fitting:
No
Chemical Base:
1-C polyurethane
Density:
10.6 lbs/gallon approx.
Application Temperature:
40 - 105°F (5 - 40°C )
Shelf Life:
12 months, Cartridges & Unipacs. (storage below 77°F (25°C)) (CQP 016-1)
Tensile Strength:
260 psi approx
Cure mechanism:
Moisture Curing
Tack Free Time:
60 min. approx.
Open Time:
45 min. approx.