Roller cover material selection guide

Chart of the rubber compounds generally in stock

Twenty Soremag series, spread across the main families: nitrile (NBR), EPDM, neoprene (CR), SBR, CSM (formerly sold as Hypalon®), silicone and natural rubber. Each family has its strengths: NBR for oils, EPDM for water, steam and chemicals, neoprene and CSM for outdoor use and ozone, silicone for high temperature and natural rubber for flexibility and abrasion.

	NIT-1	NIT-2	NIT-3	NIT-4	XN-1	HN-1	NIT-5	NIT-6	NPV-1	NPV-2	EP-1	EP-2	ES-1	NEO-1	PU-1	CSM-1	CSM-2	SBR-1	SIL-1	NR-1
Série Soremag	Nitrile NBR Standard	Nitrile NBR Haute ACN	Nitrile NBR Textile	Nitrile NBR Extra Tough	Nitrile Carboxylé XNBR	Nitrile Hydrogéné HNBR	Nitrile NBR Aqua Offset	Nitrile NBR Web Offset	Nitrile/PVC NBR-PVC	Nitrile/PVC Print NBR-PVC	EPDM Standard	EPDM Advantage	EPDM/Silicone Hybride	Néoprène Standard	Uréthane Millable PU	Hypalon Standard	Hypalon Aqua	SBR Standard	Silicone Haute Température	Caoutchouc Naturel NR
Produit	OilShield	AromatGuard	TextiGrip	NitroForce	TuffWear	HeatTuff	AquaGrip	SpeedGrip	PrintFlex	InkSeal	WeatherTuff	SmoothGuard	HybridFlex	NeoGuard	SoreMill	ChemShield	ChemAqua	BaseGrip	ThermoSil	PureElast
Propriétés physiques
Dureté Shore A	20–95	40–95	40–95	50–95	45–95	50–98	25–40	20–50	15–95	20–50	20–95	50–98	40–95	5–95	40–95	30–95	45–98	30–95	40–90	25–99
Dureté P&J	0–200	20–185	20–185	10–200	20–170	15–185	N/A	N/A	90–275	N/A	10–300	10–200	10–140	10–300	10–250	20–250	20–200	20–230	25–185	5–250
Résistance à l'abrasion	3	3	2	4	5	5	2	3	4	3	4	3	3	3	5	4	4	3	1	5
Résistance à la déchirure	3	3	2	4	5	5	3	3	3	3	3	3	2	4	5	4	4	3	1	5
Résistance en charge	4	4	4	4	5	5	4	3	3	3	3	3	2	4	5	5	5	4	1	5
Faible hystérésis (peu d'échauffement)	2	1	2	3	1	5	2	5	1	5	2	2	3	4	5	2	2	3	5	5
Résistance au marquage	3	3	3	4	2	3	2	4	1	4	3	4	3	2	5	2	2	3	5	5
Temp. max (°C/°F)	121°C / 250°F	121°C / 250°F	121°C / 250°F	121°C / 250°F	135°C / 275°F	160°C / 320°F	121°C / 250°F	121°C / 250°F	121°C / 250°F	121°C / 250°F	177°C / 350°F	177°C / 350°F	185°C / 365°F	121°C / 250°F	100°C / 212°F	149°C / 300°F	149°C / 300°F	121°C / 250°F	260°C / 500°F	100°C / 212°F
Résistance à l'ozone	1	1	1	1	1	5	1	3	4	4	5	5	5	3	4	5	5	1	5	1
Résilience	3	2	2	4	2	4	3	5	2	5	4	4	4	4	4	3	2	5	1	5
Résistances chimiques
Acides	2	2	2	2	2	3	2	2	3	3	5	5	4	3	1	2	5	3	4	3
Caustiques	3	3	4	3	3	4	3	3	3	3	5	5	4	4	1	2	5	3	4	3
HC paraffiniques	5	5	5	5	5	5	5	5	5	5	1	1	1	3	2	3	3	1	2	1
HC aromatiques	3	4	3	3	3	3	3	3	4	4	2	2	2	2	1	2	2	1	3	1
HC chlorés	1	1	1	1	1	4	1	1	1	1	1	1	2	1	1	1	1	1	3	1
Eau	4	4	5	4	3	4	3	4	4	4	5	5	4	3	2	3	5	5	4	5
Cétones	2	2	2	2	2	2	1	2	1	1	5	5	5	3	1	3	3	4	3	5
Alcools	5	5	5	5	4	5	5	5	5	5	5	5	4	4	3	4	4	5	4	5
Esters	1	1	1	1	1	1	1	1	1	1	5	5	3	3	1	5	3	4	3	5
Applications recommandées
Coating / Vernissage	✓	✓							✓		✓	✓			✓	✓
Gaufrage / Embossing					✓	✓			✓				✓		✓
Flexographie	✓										✓	✓		✓	✓					✓
Laminage	✓	✓			✓	✓	✓				✓	✓	✓	✓	✓	✓			✓	✓
Gravure laser															✓			✓
Décoration métal	✓	✓				✓						✓			✓
Impression offset								✓	✓	✓
Industrie papier	✓						✓				✓	✓				✓	✓			✓
Plastiques					✓	✓									✓				✓
Processeurs de plaques	✓								✓	✓
Rouleaux acier	✓			✓	✓	✓					✓	✓		✓	✓			✓		✓
Rouleaux textiles			✓								✓	✓	✓				✓	✓		✓
Industrie du bois	✓				✓	✓					✓	✓	✓		✓					✓

Légende des cotes : 5 = Excellent · 4 = Au-dessus de la moyenne · 3 = Moyen · 2 = Faible · 1 = Très faible | ✓ = Application recommandée

Indicative values, not contractual. Soremag ref. codes. P&J = Pusey & Jones (hardness scale for soft rollers).

⬇ Download the rubber chart (PDF)⤢ Enlarge the chart and see the data sheets 📄 Rubber data sheets

Polyurethane Chart

At Soremag, polyurethanes are hot cast. The diisocyanate forms the rigid backbone — heat resistance, load, fatigue — while the polyol (polyester or polyether) governs resistance to water, chemicals and solvents. Here are the six main systems: MDI polyester, MDI polyether, TDI polyester, TDI polyether, PPDI and NDI.

Propriété	MDI ester	MDI éther	TDI ester	TDI éther	PPDI	NDI
Caractéristiques générales
Dureté typique	Large gamme, du souple (Shore A) au dur (jusqu'au Shore D) selon formulation
Polyol (résistance eau/chimie)	Ester	Éther	Ester	Éther	selon formulation	selon formulation
Coût matière relatif	$	$	$	$	$$$	$$$
Propriétés physiques & mécaniques
Abrasion	TB	B–TB	TB	TB	E	E
Résistance à la coupure / déchirure	TB	B	TB	B–TB	E	E
Rebond / résilience	M–B	TB	M–B	TB	TB–E	E
Faible hystérésis (peu d'échauffement)	M	B–TB	M	B–TB	TB–E	E
Capacité de charge	B–TB	B–TB	B–TB	B–TB	B–TB	E
Fatigue dynamique (flex)	M–B	TB	B	TB	E	E
Tenue à chaud (service)	B	B	B–TB	B–TB	E	TB
Résistance à l'eau & aux produits chimiques
Immersion / humidité permanente	F–M	E	F–M	E	TB	M–B
Hydrolyse / eau chaude	F	TB	F	TB	TB	M–B
Huiles & graisses	TB	B	TB	B	TB	TB
Solvants aliphatiques / diesel	B–TB	M–B	B–TB	M–B	B–TB	B
Solvants aromatiques	F	F	F	F	M–F	M–F
Cétones, MEK, solvants chlorés	D	D	D	D	F–D	F–D
Usages typiques
Application recommandée	Pièce d'usure économique hors eau	Roue ou galet standard, milieu humide	Racleurs, bavettes, milieux abrasifs et gras	Roue ou galet standard, milieu humide / lavé	Joints haute performance, tenue thermique et fatigue	Roue lourde de manutention intensive, haute vitesse / NVH

Légende : E ExcellentTB Très bonB BonM MoyenF FaibleD Déconseillé| Coût : $ économique → $$$ premium.

Indicative values, not contractual, taken from the Soremag polyurethane guide. Each system comes in many hardness and formulation variants; FDA / food-contact and antistatic grades on request. Low hysteresis “E” = little heat build-up (an advantage).

Read the full polyurethane guide →⤢ Enlarge the chart

How to choose

The right material and the right durometer follow from your actual conditions. Here are the factors that drive the decision — give them to us and we will recommend the material, durometer and finish as a package.

🧪

Product in contact

Water, steam, oils, solvents, acids, inks, food: that is the first filter. Polyester for oils; polyether and EPDM for water and steam.

⚙️

Abrasion

Friction, particles, greasy and cutting environments: a clear advantage to polyurethane (PPDI / NDI at the extreme), otherwise NBR XNBR / HNBR.

⬇️

Load & pressure

Heavily loaded guide rollers, high nip pressures: NDI first, otherwise PPDI; hard rubbers for moderate loads.

⏩

Speed

At high speed, heat build-up from hysteresis becomes critical: favor low-hysteresis systems (NDI, PPDI, polyether).

🌡️

Temperature

High continuous service → PPDI on the polyurethane side, silicone (up to 260 °C) or EPDM/HNBR on the rubber side. Cold → polyether and silicone.

🧼

Chemicals & cleaning

Frequent washdowns and hot water → polyether (hydrolysis-resistant) or EPDM. Ketones / chlorinated solvents → polyurethane is not suitable.

✨

Surface finish

Polished, matte, micro-textured, grip or non-marking: this drives the durometer and the family (silicone for release).

📐

Geometry

Cover thickness, diameter, profile (crown/taper) and tolerances affect the durometer and the process chosen.

Material Selection Guide