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Review side-by-side product details, technical notes, and practical differences.

Product comparison

HP4 Hybrid Polymer vs Solar Seal 900

HP4 | Hybrid Polymer Exterior Sealant

Origin Pro

HP4 | Hybrid Polymer Exterior Sealant

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Solar Seal® #900 Solar Seal®

Compared with

Solar Seal® #900 Solar Seal®

Core Performance & Application Attributes

Sealant Technology

HP4 | Hybrid Polymer Exterior Sealant

Advanced Hybrid Polymer (SMP / MS Polymer)

Solar Seal® #900 Solar Seal®

Terpolymer Elastomeric Technology
Product Class & Movement (ASTM C920)

HP4 | Hybrid Polymer Exterior Sealant

ASTM C920 – Class 25 (±25% joint movement)

Solar Seal® #900 Solar Seal®

ASTM C920 – Class 25 (±25% joint movement)
Skin Formation / Tack-Free Performance

HP4 | Hybrid Polymer Exterior Sealant

Skin 15–20 minutes; Tack-Free approximately 30 minutes

Solar Seal® #900 Solar Seal®

Thin skin in 24 hours, Complete cure approximately 21 days @ 75°F; Tack-Free 4 hours
Application Temperature Range

HP4 | Hybrid Polymer Exterior Sealant

0°F to 120°F

Solar Seal® #900 Solar Seal®

10°F to 125°F
Nozzle Options

HP4 | Hybrid Polymer Exterior Sealant

V-notch option for 3/8" siding joint coverage plus standard 4" nozzle for 1/4" window bead applications

Solar Seal® #900 Solar Seal®

Standard nozzle configuration

Comparative Overview

Both HP4 and #900 Solar Seal® meet ASTM C920 Class 25 movement requirements for exterior siding and window applications.

Attribute HP4 | Hybrid Polymer Exterior Sealant Solar Seal® #900 Solar Seal®
Hybrid Polymer Technology
✓
✕
ASTM C920 Class 25
✓
✓
Faster Skin / Cure Profile
✓
✕
Application Temperature Range
✓
✕
No Overnight Tube Warming Required
✓
✕
Application – Nozzle Options
✓
✕
Color Matching Capability
✓
✓

Hybrid Polymer Technology

HP4 | Hybrid Polymer Exterior Sealant

✓

Solar Seal® #900 Solar Seal®

✕

ASTM C920 Class 25

HP4 | Hybrid Polymer Exterior Sealant

✓

Solar Seal® #900 Solar Seal®

✓

Faster Skin / Cure Profile

HP4 | Hybrid Polymer Exterior Sealant

✓

Solar Seal® #900 Solar Seal®

✕

Application Temperature Range

HP4 | Hybrid Polymer Exterior Sealant

✓

Solar Seal® #900 Solar Seal®

✕

No Overnight Tube Warming Required

HP4 | Hybrid Polymer Exterior Sealant

✓

Solar Seal® #900 Solar Seal®

✕

Application – Nozzle Options

HP4 | Hybrid Polymer Exterior Sealant

✓

Solar Seal® #900 Solar Seal®

✕

Color Matching Capability

HP4 | Hybrid Polymer Exterior Sealant

✓

Solar Seal® #900 Solar Seal®

✓

Differences You’ll Notice

Key differences between HP4 and #900 Solar Seal® include sealant chemistry, skin and cure timing, application temperature range, cold-weather handling requirements, nozzle configuration, and supply structure. HP4 skins in 15–20 minutes and reaches tack-free in approximately 30 minutes, supporting faster progression on the jobsite. HP4 can be applied from 0°F to 120°F and does not require overnight tube warming in cool conditions, reducing preparation time before installation. HP4 is available through direct online ordering with case-based pricing and delivery to the jobsite or office.

Ready to Make the Switch?

Advanced hybrid technology. Apply from 0° F – no overnight warming required. Delivered direct.

Beyond the Product Direct Online Ordering · Flexible Ordering Options · Pro Dashboard
View HP4 Hybrid Polymer Details
Product Comparison Disclaimer

Product comparison information is based on publicly available technical data published by the respective manufacturers and available at the time of review. Comparisons are provided for general informational purposes only and do not imply product equivalence, specification approval, certification, or suitability for any particular application.

Product names, trademarks, packaging, and images are the property of their respective owners and are used solely for identification and comparative purposes. Legacy Sealants, Inc. and Origin Pro are not affiliated with, sponsored by, or endorsed by any referenced manufacturer.

Product formulations and specifications may change. Users should review current manufacturer technical literature and independently determine product suitability for their specific application.

All third-party trademarks are the property of their respective owners. Their use is solely for identification and comparative purposes and does not imply affiliation, sponsorship, or endorsement.