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ORIGIN PRO COMPARE
Origin Pro HP3 vs. NovaFlex® Multi-Purpose Adhesive Sealant
Compared with
NovaFlex® Multi-Purpose Adhesive Sealant
Technical Overview
Origin Pro HP3: Neutral-cure alkoxy RTV silicone; ASTM C920 Class 50; ±50% movement.
NovaFlex® Multi-Purpose: Neutral-cure silicone; Type I is ASTM C920 Class 35 and Type II is ASTM C920 Class 50. Both are Type S, Grade NS, Uses NT, M, G, A & O.
Comparison Table
| Attribute | Origin Pro HP3 | NovaFlex® Multi-Purpose Adhesive Sealant |
|---|---|---|
| Sealant Technology | Neutral-cure alkoxy RTV silicone | Neutral-cure silicone |
| ASTM C920 Classification | Class 50 | Type I: Class 35; Type II: Class 50 |
| Movement Capability | ±50% | Class 35 or Class 50, depending on formulation |
| Water/Rain Ready | Approximately 30 minutes | Not stated in TDS |
| Skin-Over / Tack-Free Time | Approximately 30 minutes | 5-10 minutes at 77°F and 50% RH |
| Published Cure Time | Approximately 24 hours | 48 hours at 3/8 inch; 14 days for OEM window applications |
| Application Temperature | 40°F to 100°F | Above 0°F and below 120°F surface temperature |
| Service Temperature | -60°F to 400°F | -40°F to 400°F |
| Published Applications | Interior and exterior, including kitchen and bath, windows, doors, siding, trim and general sealing | General purpose; used most frequently in window and door manufacturing for glazing or structural back-bedding |
| Paintable | No | No |
| Mold and Mildew Claim | Resistant on cured sealant | Not stated in TDS |
| Published Colors | Clear and white; custom colors available | Various colors; formulation type varies by product code |
| Packaging | 10.1 fl oz plastic cartridge and 2.8 fl oz squeeze tube | 10 oz cartridges, 20 oz sausage packs, 5 gallon pails and 55 gallon drums |
Published manufacturer specifications are shown as stated in the applicable technical data sheets.
Comparative Overview
Origin Pro HP3 and NovaFlex® Multi-Purpose are neutral-cure silicone sealants. HP3 publishes ASTM C920 Class 50 and ±50% movement. NovaFlex is offered in Type I Class 35 and Type II Class 50 formulations, determined by product code, and publishes ASTM C920 Uses NT, M, G, A & O plus additional AAMA and federal specification references.
Differences You Will Notice
HP3 publishes approximately 30-minute water and rain readiness, approximately 24-hour full cure, a -60°F lower service-temperature limit, broad interior and exterior jobsite applications, and custom color matching. NovaFlex publishes a faster 5-10 minute skin-over time, a wider installation-temperature range, bulk packaging options, and frequent use in window and door manufacturing for glazing or structural back-bedding. Its TDS lists 48-hour through-cure at 3/8 inch and 14 days for OEM window applications, with no comparable water-ready time stated. Because NovaFlex performance varies by formulation, confirm the specific product code before comparison.
Beyond the Product
Origin Pro’s Pro Dashboard makes buying simpler, faster and more organized. See pricing before you order, find and save color matches, track projects and past orders, and quickly reorder—all in one place.
Product Comparison Information
These comparisons are intended to help contractors evaluate differences in product features and manufacturer-published specifications when considering products for a particular application. Unless expressly stated, Legacy Sealants, Inc. has not conducted head-to-head testing of the referenced products. Information is drawn from manufacturer technical literature identified on the page and was available as of the date shown. Because test methods and conditions may differ by manufacturer, published values should not be treated as directly equivalent unless specifically noted.
Product names, trademarks, packaging and images are the property of their respective owners and are used solely to identify the products being compared. Legacy Sealants, Inc. is 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.
Trademark Ownership
NovaFlex® is a registered trademark of Novagard Solutions, Inc. All third-party trademarks remain the property of their respective owners.
Technical Literature
Origin Pro HP3 100% Silicone Sealant Technical Data Sheet, version dated August 11, 2026. NovaFlex Multi-Purpose Adhesive Sealant Specification Data, TDS - NovaFlex MX Multi-Purpose Sealant - All Colors, version 2.0, effective August 29, 2024, Novagard Solutions, Inc.