Versollan OM 1255NX-1: specs, colors and grades to ask about
Avient TPU-alloy TPE for thin-wall overmolding onto PC, ABS and PC/ABS, 59 Shore A, natural. Published data, custom color notes, what to qualify and how to request a quote.
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The short answer
Versollan OM 1255NX-1 is a thermoplastic elastomer from Avient that Avient describes as a high performance TPU alloy for thin-wall overmolding onto polycarbonate (PC), ABS, PC/ABS and copolyester. Avient’s data sheet (Rev 2016-02-12) gives 59 Shore A (ASTM D2240, 10 s), specific gravity 1.05 (ASTM D792), melt flow 8.0 g/10 min at 190°C / 2.16 kg (ASTM D1238), tensile strength 6.58 MPa and 650% elongation (ASTM D412). The -1 suffix is the natural grade; Avient’s data sheet notes good colorability and that precolored compounds are available, so a gray such as Gray 11C is a custom color match, not a stock item. Close Avient grades to ask about include the black 1255NX-9, the gray 1255NX-431C and the harder 1262NX-1. None is a drop-in replacement; qualify adhesion on your own substrate and color.
Also written as: Versollan OM1255NX-1, OM 1255 NX-1, Versollan 1255NX. Avient lists sister versions with other suffixes: 1255NX-9 (black), 1255NX-9 BLACK CN, 1255NX-9 BLACK CN ESD and 1255NX-431C (gray). Versollan is an Avient brand that came from GLS (PolyOne bought GLS in 2008; PolyOne became Avient in 2020). Do not confuse it with Avient’s Versaflex OM grades, a separate GLS overmolding TPE line; Avient describes Versollan as the line that combines TPU performance with TPE aesthetics. Quote the full code, including the color suffix, from your drawing or bag label.
Buying Versollan OM 1255NX-1: one gaylord to a railcar · supplier COA on every prime lot · access to 100+ partner warehouse locations · a polymer chemist checks the grade code before we quote · we aim to quote within one to three business days
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Versollan OM 1255NX-1 specs from the data sheet
Typical values from Avient’s technical data sheet for Versollan OM 1255NX-1 (Rev 2016-02-12, from Avient’s technical data sheet finder). Avient states typical values are not to be construed as specifications. The lot COA shows what you actually receive. Values only compare at the same test method and condition.
| Property | Value | Test method or note |
|---|---|---|
| Producer (brand owner) | Avient Corporation (formerly PolyOne; GLS thermoplastic elastomers) | Avient data sheet |
| Polymer | Thermoplastic elastomer; Avient calls it a high performance TPU alloy for thin-wall overmolding | Avient data sheet |
| Substrates named by Avient | PC, ABS, PC/ABS and copolyester; key characteristic lists superior adhesion to PC, ABS, PC/ABS, PC/PBT and copolyester | Avient data sheet |
| Hardness | 59 Shore A | ASTM D2240, 10 s |
| Specific gravity | 1.05 | ASTM D792 |
| Melt flow (MFR) | 8.0 g/10 min at 190°C / 2.16 kg; 125 g/10 min at 200°C / 5.0 kg | ASTM D1238 |
| Apparent viscosity | 16.7 Pa·s at 200°C, 11,200 s-1 | ASTM D3835 |
| Molding shrinkage, flow | 0.70–1.3% | ASTM D955 |
| Tensile stress at 100% / 300% strain | 1.93 / 3.39 MPa (280 / 492 psi) | ASTM D412, Die C, 23°C |
| Tensile strength at break | 6.58 MPa (955 psi) | ASTM D412, Die C, 23°C |
| Elongation at break | 650% | ASTM D412, Die C, 23°C |
| Tear strength | 38.5 kN/m (220 lbf/in) | ASTM D624 |
| Compression set | 26% at 23°C, 22 h | ASTM D395B |
| Brittleness temperature | -68.5°C (-91.3°F) | ASTM D746, 1.90 mm, conditioned 40 h at 23°C / 50% RH |
| Flame rating | HB at 1.5 mm (0.06 in) | UL 94, as listed on the Avient data sheet |
| Drying | 52–54°C (125–130°F) for 3–4 h; suggested max moisture below 0.030%; suggested dew point -40°F | Avient processing information |
| Barrel temperatures | Rear 163–185°C; middle 168–196°C; front and nozzle 177–210°C | Avient processing information |
| Mold temperature | 21–49°C (70–120°F) | Avient processing information |
| Other molding settings | Back pressure 0.172–0.345 MPa (25–50 psi); screw speed 75–125 rpm; injection speed 1–5 in/s; hold pressure 70% of boost | Avient processing information |
| Regrind | Up to 20%, clean, with minimal property loss per Avient | Avient processing information |
| Color | Natural. Avient lists good colorability and precolored compounds; color concentrates should use polyether or polyester urethane carriers at 50:1 to 25:1 | Avient injection notes |
| Compliance listed | RoHS compliant. No food-contact, biocompatibility or medical statement on the data sheet | Avient data sheet |
| Regional availability | Africa and Middle East, Asia Pacific, Latin America, North America; status Commercial: Active | Avient data sheet |
Source data sheets are listed at the bottom of this page. Confirm against the current sheet for your exact grade code and color.
Colored versions are not the same as natural on paper. Avient’s black 1255NX-9 sheet lists MFR 6.0 g/10 min and 1.1–1.7% shrinkage, and the gray 1255NX-431C sheet lists 9.56 MPa tensile strength and a 60–90°C drying range. Ask for the data sheet of the exact color you will mold.
Grades to ask about instead of Versollan OM 1255NX-1
These are Avient Versollan OM grades with published data for the same overmolding job. They are starting points for a trial, not substitutes: hardness, flow, color and the bond to your exact substrate differ. If your drawing, device file or customer approval names Versollan OM 1255NX-1, any change needs that approval and new adhesion tests.
| Grade | Producer | Melt flow | Density | Key property | How it compares |
|---|---|---|---|---|---|
| Versollan OM 1255NX-9 | Avient | 6.0 g/10 min (190°C / 2.16 kg, ASTM D1238) | 1.05 SG (ASTM D792) | 59 Shore A (10 s); tensile 6.58 MPa, elongation 650% (ASTM D412); tear 38.5 kN/m; compression set 24%; shrinkage 1.1–1.7% | Check. The black version of the same grade family, also listed for North America. Same hardness and tensile data, but lower listed flow and higher shrinkage. Fine for black parts; it cannot be recolored to gray. Quote this alternative › |
| Versollan OM 1255NX-431C | Avient | Not listed on the data sheet | 1.05 SG (ASTM D792) | 59 Shore A (10 s); tensile 9.56 MPa, elongation 660% (ASTM D412); apparent viscosity 17.4 Pa·s at 200°C | Check. Avient’s gray version (sheet Rev 2025-03-20), listed for Asia Pacific only and for PC, ABS and PC/ABS. Avient does not say it matches Gray 11C; compare it against your color standard before assuming it fits. Quote this alternative › |
| Versollan OM 1262NX-1 | Avient | 11 g/10 min (190°C / 2.16 kg, ASTM D1238) | 1.17 SG (ASTM D792) | 65 Shore A (10 s); tensile 7.64 MPa, elongation 710% (ASTM D412); tear 40.3 kN/m; compression set 35%; shrinkage 0.90–1.5% | Partial match. Same Versollan OM family and natural color; its description names PC, ABS and PC/ABS (copolyester is in its adhesion list only). Harder (65 vs. 59 Shore A) and denser (1.17 vs. 1.05), so grip feel and part weight change. Higher compression set, and a narrower listed mold temperature (21–38°C). Quote this alternative › |
From Avient’s published data sheets. We have not listed overmolding TPEs from other producers because we could not confirm matching published data; ask and a chemist will compare current sheets.
Custom colors such as Gray 11C
The -1 grade is natural. A gray like Gray 11C is made one of two ways, and both are custom work:
- Precolored compound. Avient’s data sheet says a high color match consistency can be obtained with precolored compounds from GLS, its TPE business. A compounder can also color-match. Send your color standard (a plaque, a part or the reference you use, for example a Pantone Cool Gray 11 C target if that is what Gray 11C means on your drawing).
- Color concentrate at the press. Avient says concentrates with polyether or polyester urethane carriers suit this grade, at 50:1 to 25:1, kept as low as possible so hardness does not shift. It says PP-based concentrates significantly affect adhesion and TPE-based concentrates should not be used.
Either way, the colored material is a new lot to qualify. Check hardness, bond strength and color under your lighting before you build prototypes for a design review. See masterbatch vs. precolored resin and color inconsistency.
Typical uses for Versollan OM 1255NX-1
Avient’s data sheet lists these uses and features for Versollan OM 1255NX-1:
- Overmolding and thin-walled parts on PC, ABS, PC/ABS and copolyester
- Flexible grips with a matte, rubbery, low-gloss finish
- Power and other tools, business equipment, consumer and electrical/electronic applications
Avient’s Versollan page adds strong resistance to chemicals and oil, good processing in long, thin flow paths and fast set-up. Avient has also published a case study in which a Versollan TPE gave excellent adhesion to PC/ABS at a 2 mm wall on a compartment cover for a medical device maker. That case study does not name the grade, describes a custom formulation and cites RoHS compliance, not biocompatibility. The 1255NX-1 data sheet makes no medical claim, so read the case study as an application example only, not as evidence that this grade is approved or suitable for a medical device. For the TPE family, see our TPE and TPV buying guide; for housings, see plastics for medical device housings.
What to check when you qualify it
- Substrate: Avient names PC, ABS, PC/ABS, PC/PBT and copolyester. Bond strength still depends on the exact substrate grade, its color and its moisture. Peel-test real parts, not just plaques. See overmold not bonding.
- Process: Avient’s overmolding guide says a TPE can bond well in two-shot molding and poorly in insert molding. Qualify in the process you will use in production, not only on a prototype tool.
- Wall thickness: Avient’s guide says 1.5–3 mm walls give good bonding in most overmolding jobs, and the TPE should be no thicker than the substrate to limit warp.
- Color: qualify in the final color. Colorant carrier and loading change adhesion and hardness, and Avient’s black and gray sheets list different flow, shrinkage, tensile or drying values from natural.
- Drying and residence: dry 3–4 h at 52–54°C to below 0.030% moisture; do not leave the melt idle in the barrel for more than 5 minutes; purge before and after with a low-flow (0.5–2.5 MFR) PE or PP, per Avient. See the resin drying guide.
- Medical use: the only compliance line on the data sheet is RoHS; it makes no medical or biocompatibility claim. If the device needs biocompatibility, sterilization or other regulatory data, ask Avient in writing before you commit the design. See medical and FDA resins.
- Cleaning agents: Avient cites chemical and oil resistance for the family, not for specific disinfectants. Soak-test parts in the wipes and cleaners your device will see.
- Data sheet age: the natural sheet is Rev 2016-02-12. Ask Avient to confirm current values and availability for your region before you release a drawing.
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Buying Versollan OM 1255NX-1: price, lead time and lot size
- Lot size. From one gaylord to a railcar. For prototypes, samples (~50 lb) are available upon credit approval. See gaylord, LTL and truckload.
- Custom color. A custom gray is a made-to-order lot from Avient or a compounder. We offer custom compounding and color matching; the minimum, lead time and price are confirmed with your quote.
- Where it ships from. We have access to 100+ partner warehouse locations. Natural or standard black material already in a partner warehouse usually moves sooner than a custom color; your quote says which applies.
- Price. We do not publish prices because they move with feedstock, freight and order size. What moves your price most: lot size, natural vs. custom color, ship-to region, and whether you need Versollan OM 1255NX-1 itself or can accept a matched alternative. See how resin is priced.
- Paperwork. Supplier COA on every prime lot (what a COA shows). Ask for Avient’s current data sheet, the SDS and any regulatory letter your device file needs.
- If Versollan OM 1255NX-1 itself is not available. If we cannot source it, we tell you, then quote a matched alternative with a side-by-side comparison.
Send the grade code, your color standard, your substrate, annual volume and ship-to location. A polymer chemist reviews every request before we quote. Lead time and payment terms are confirmed with your quote. For several grades at once, use the resin RFQ template.
Trade names belong to their owners. ResinBridge is not affiliated with these producers; grade names are used only to identify the material. Data reflects published sheets as of November 2026.
Sources
- Avient Versollan OM 1255NX-1 technical data sheet, Rev 2016-02-12 (PDF, Avient data sheet finder)
- Avient Versollan OM 1255NX-9 technical data sheet, Rev 2016-02-12 (PDF)
- Avient Versollan OM 1255NX-431C technical data sheet, Rev 2025-03-20 (PDF)
- Avient Versollan OM 1262NX-1 technical data sheet, Rev 2016-02-12 (PDF)
- Avient Versollan thermoplastic elastomers product page
- Avient TPE overmolding design guide (PDF)
- Avient case study: Versollan TPE on a medical device compartment cover (PDF)
- Avient technical data sheet finder
Common questions
What is Versollan OM 1255NX-1?
A thermoplastic elastomer from Avient that Avient describes as a high performance TPU alloy for thin-wall overmolding onto PC, ABS, PC/ABS and copolyester. It gives a matte, rubbery grip. The -1 suffix is the natural grade.
What is the hardness of Versollan OM 1255NX-1?
59 Shore A (ASTM D2240, 10 s reading), with specific gravity 1.05 (ASTM D792), per Avient’s data sheet.
What does Versollan OM 1255NX-1 bond to?
Avient’s data sheet names PC, ABS, PC/ABS and copolyester, and lists superior adhesion to PC, ABS, PC/ABS, PC/PBT and copolyester. Confirm the bond on your own substrate grade, color and process with a peel test.
Can I get Versollan OM 1255NX-1 in Gray 11C?
Not as a standard Avient catalog color that we could find. The -1 grade is natural, and gray is a custom color match made as a precolored compound by Avient or a compounder, or with a urethane-carrier color concentrate at the press. Avient’s gray 1255NX-431C is listed for Asia Pacific only, and Avient does not say it matches Gray 11C. Send your color standard with the quote request.
Is Versollan OM 1255NX-1 a medical grade?
The data sheet makes no medical, biocompatibility or food-contact claim; it lists RoHS compliance. Avient has published a case study of a Versollan TPE on a medical device compartment cover, but it does not name the grade, describes a custom formulation and cites RoHS, not biocompatibility. It is not a medical approval. For a device, get any regulatory data you need from Avient in writing.
How do you dry and mold Versollan OM 1255NX-1?
Avient gives 3–4 hours at 52–54°C to below 0.030% moisture, barrel temperatures from 163°C at the rear to 177–210°C at the front and nozzle, a 21–49°C mold, and no idle time in the barrel over 5 minutes.
What is equivalent to Versollan OM 1255NX-1?
No grade is a drop-in replacement. Starting points are Avient’s black 1255NX-9, the gray 1255NX-431C and the harder 1262NX-1 (65 Shore A). Each needs its own adhesion and color qualification.
Can ResinBridge quote Versollan OM 1255NX-1?
Yes. Send the grade, color standard, substrate and volume. A polymer chemist reviews every request. We quote Versollan OM 1255NX-1 where our supply partners can source it, or a matched alternative, and say which one.
If your grade is not listed, tell us what you run. We source commodity, engineering and specialty resins.
Need Versollan OM 1255NX-1 or an alternative to qualify?
A polymer chemist reviews every request, then matches your grade or finds a matched alternative and prices it.
ResinBridge is not an authorized distributor of Versollan; when we source Versollan OM 1255NX-1 through our supply network, we confirm lot origin and COA with your quote.
What to send for an accurate quote
- The grade name, from any supplier, or a data sheet
- Color (natural, black or a custom match)
- Fill type and percentage, if any
- Melt flow, if you know it
- Quantity for this order and what you use in a year
- Ship-to city and state or province
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