ElastiSeal® 6098 is a non-flowing sealant that is designed to waterproof and prevent corrosion in spot weld assemblies. This sealant permits welding with conventional spot welders. It prevents moisture and oxygen from entering the joint and provides corrosion protection to the area that cannot be coated with primer. The sealant disappears from the area of the weld but retains a tight seal around the weld spot. The weld strengths are unchanged by the use of ElastiSeal® 6098.

Product Type: Elastomeric Sealant, Solventborne Adhesive

Compatible Substrates & Surfaces: Metal, Steel

Features: Corrosion Resistant, Good Moisture Resistance, Oxidation Resistant, Thixotropic, Waterproofing

Technical Data Sheet
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Enhanced TDS

Identification & Functionality

Features & Benefits

Product Features
  • Prevents corrosion in a variety of steel spot welds - Including stainless steel
  • Weldable with conventional spot welders (Permits conventional spot welding and prevents moisture and oxygen from entering the joint)
  • Remains permanently flexible and elastic
  • Will not stain or bleed through most primers and paints
  • Not affected by paint bake temperatures up to 90°C (195°F)
  • Permanently flexible and does not effect weld strength
  • Corrosion protection in unprimed seam

Applications & Uses

Compatible Substrates & Surfaces
Basic Uses
  • ElastiSeal® 6098 is used to seal and waterproof steel joints.
  • It has been used on passenger rail cars for more than fifty years.
  • In service, this sealant remains permanently flexible and gives corrosion protection for the life of the vehicle.
Typical Applications

ElastiSeal® 6098 can be applied as a bead or spread as a paste. Welds may be made through the sealer from 10 minutes to 72 hours after application. (“Spitting” may occur if welding is performed before solvent escapes). This sealer is unaffected by conventional industrial paint bakes. Excess material may be wiped off with mineral spirits; use mineral spirits to clean tools and equipment.


Typical Properties
ValueUnitsTest Method / Conditions
Specific Gravity1.5-ASTM D1475
Solid Content88 - 92%ASTM C681
Sag Resistance (with 0.625” bead)No sagging-ASTM D2202
Dry Time (at 20°C, 50% RH)min. 72hASTM D1640

Technical Details & Test Data

Test Data
The following tests were performed after drying 21 days @ 20°C (68°F) 50% RH
Effects of Heat Aging: ASTM C 792; 336 hours @ 70°C (158°F) Flexibility maintained, no loss of adhesion
Humidity Resistance: ASTM D 2247; 500 hours @ 38°C (100°F); 100% RH No corrosion under sealer, no loss of adhesion
Cyclic Salt Fog/UV Exposure: ASTM D 5894; 1000 hours No corrosion under sealer, no loss of adhesion
Surface Flammability  
ASTM E 162  
Avg. Flamespread Factor (FS) 1
Avg. Heat of Evolution (Q) 5.18
Avg. Flamespread Index (ls) 5.18
Flamespread Index Range 4.00 to 7.08
Optical Density of Smoke Generation  
ASTM E 662 Non-Flaming Flaming
Ds @ 1.5 min. (average) 0 0.4
Ds @ 4.0 min. (average) 0.4 20.6
Dm(corr) (average) 26.1 73.3

Packaging & Availability

Packaging Type
Regional Availability
  • North America
  • Cartridges
  • 5 gallon pails
  • Storage & Handling

    Shelf Life
    24 Months
    Storage Conditions

    Store material in original unopened container between 4°C and 32°C (40°F and 90°F).