GRN 10x26x7 NBR A/SC Single-Lip Rotary Shaft Seal

GRN 10x26x7 NBR A/SC Single-Lip Rotary Shaft Seal

GRN 10x26x7 NBR A/SC is a single-lip rotary shaft seal / oil seal with nominal dimensions of 10x26x7 mm. It is manufactured from NBR - Nitrile Butadiene Rubber. The A/SC design incorporates a spring-loaded primary dynamic sealing lip and does not have an additional dust lip.

The complete technical identification is:

GRN + 10x26x7 mm + NBR + A/SC

GRN 10x26x7 NBR A/SC - Technical Characteristics

Key identification data:

Brand: GRN

Product type: Rotary Shaft Seal / Radial Shaft Seal / Oil Seal

Design: A/SC

Configuration: Single lip

Material: NBR

Material name: Nitrile Butadiene Rubber

Dimensions: 10x26x7 mm

Shaft diameter d: 10 mm

Housing bore diameter D: 26 mm

Seal width B: 7 mm

Primary sealing lip: Yes

Garter spring: Yes

Additional dust lip: No

The key product identification is:

10x26x7 + NBR + A/SC

The single-lip construction is an important part of the specification and should be retained when searching for or selecting a replacement.

GRN 10x26x7 Oil Seal Dimensions

Nominal dimensions:

d = 10 mm - nominal shaft diameter

D = 26 mm - nominal housing bore diameter

B = 7 mm - axial seal width

Complete dimensions:

10x26x7 mm

The seal is dimensionally specified for a nominal 10 mm shaft and a 26 mm housing bore, with an axial width of 7 mm.

All three dimensions should be verified before selecting a replacement.

A/SC Single-Lip Seal Design

The A/SC configuration identifies this product as a single-lip rotary shaft seal.

The construction incorporates:

one primary dynamic sealing lip

a garter spring acting on the primary sealing lip

no additional dust lip

This is the principal construction difference between this A/SC variant and a double-lip AO/TC seal.

Spring-Loaded Primary Sealing Lip

The primary sealing lip operates dynamically against the surface of the nominal 10 mm shaft.

A circumferential garter spring helps maintain radial contact between the sealing edge and the rotating shaft surface.

Effective sealing also depends on shaft surface quality, alignment, runout, lubrication, operating temperature, rotational speed and correct installation.

No Additional Dust Lip

GRN 10x26x7 NBR A/SC is a single-lip seal.

It does not incorporate the additional auxiliary dust lip found in an AO/TC double-lip configuration.

This distinction is important when selecting a replacement. Two seals may have identical nominal dimensions and the same NBR material but still represent different technical variants because their lip configurations differ.

NBR - Nitrile Butadiene Rubber

Seal material:

NBR - Nitrile Butadiene Rubber

NBR forms an integral part of the complete product specification:

10x26x7 + NBR + A/SC

A 10x26x7 seal manufactured from FKM/FPM, silicone or another elastomer represents a different material variant even if the nominal dimensions are identical.

The exact NBR compound used for this GRN seal has not been specified. Therefore, an exact hardness, fixed operating temperature range, maximum speed or universal chemical-resistance rating should not be assigned solely from generic NBR properties.

How Does the GRN 10x26x7 A/SC Oil Seal Work?

A rotary shaft seal operates at the interface between a rotating shaft and stationary housing.

Nominal shaft diameter:

10 mm

Nominal housing bore diameter:

26 mm

Axial seal width:

7 mm

The primary lip operates dynamically against the shaft surface. The garter spring helps maintain contact between the sealing edge and the rotating shaft.

Unlike an AO/TC double-lip design, this A/SC variant does not incorporate an additional dust lip.

GRN 10x26x7 A/SC vs AO/TC

This distinction is particularly important when selecting a seal.

A/SC:

Single-lip design
Spring-loaded primary sealing lip
No additional dust lip

AO/TC:

Double-lip design
Spring-loaded primary sealing lip
Additional auxiliary dust lip

Therefore:

10x26x7 NBR A/SC ≠ 10x26x7 NBR AO/TC

in terms of sealing-lip construction, even when their nominal dimensions and elastomer material are identical.

GRN 10x26x7 vs 10x26x4

Both variants have:

d = 10 mm

D = 26 mm

but different widths:

10x26x7: B = 7 mm

10x26x4: B = 4 mm

The axial width differs by 3 mm.

They should not be considered automatically interchangeable. Seal width can affect installation geometry and the axial position of the sealing lip on the shaft.

GRN 10x26x7 vs 10x25x7

Both variants have:

d = 10 mm

B = 7 mm

but different outside diameters:

10x26x7: D = 26 mm

10x25x7: D = 25 mm

The 1 mm difference in outside diameter corresponds to a different nominal housing bore size.

These are therefore different seal dimensions.

Selection and Interchangeability

When selecting a replacement for GRN 10x26x7 NBR A/SC, verify:

d = 10 mm

D = 26 mm

B = 7 mm

NBR material

A/SC design

single-lip configuration

spring-loaded primary sealing lip

absence of an additional dust lip

sealed medium

operating temperature

shaft rotational speed

pressure conditions

shaft surface condition

installation geometry

Matching the 10x26x7 mm dimensions alone does not establish full interchangeability if another seal has a different elastomer or lip configuration.

Technical Specification

Brand: GRN

Product: Rotary Shaft Seal / Radial Shaft Seal / Oil Seal

Design: A/SC

Configuration: Single lip

Material: NBR

Material name: Nitrile Butadiene Rubber

Shaft diameter d: 10 mm

Outside diameter D: 26 mm

Width B: 7 mm

Dimensions: 10x26x7 mm

Primary sealing lip: Yes

Garter spring: Yes

Additional dust lip: No

Exact NBR compound: Not specified

NBR hardness: Not confirmed

Exact operating temperature range: Not confirmed

Maximum shaft speed: Application-dependent

Maximum pressure: Application-dependent

GRN 10x26x7 NBR A/SC - Stock in Poland

Warehouse and Store: Lublin, Smoluchowskiego 1 Street, Building 4.

24h Shipping. Available from stock in Poland for delivery across the EU.

FAQ

What are the dimensions of the GRN 10x26x7 oil seal?

The nominal dimensions are 10x26x7 mm: d = 10 mm, D = 26 mm and B = 7 mm.

What does A/SC mean?

A/SC identifies this product as a single-lip rotary shaft seal with a spring-loaded primary sealing lip.

Does the GRN 10x26x7 A/SC have an additional dust lip?

No. It is a single-lip design without an additional dust lip.

What material is the seal made from?

It is manufactured from NBR - Nitrile Butadiene Rubber.

Does the 10x26x7 A/SC oil seal have a garter spring?

Yes. The garter spring acts on the primary dynamic sealing lip.

Are 10x26x7 A/SC and 10x26x7 AO/TC the same?

No. They may have identical dimensions and material, but their lip configurations differ. A/SC is single-lip, while AO/TC is double-lip.

Can a 10x26x4 seal replace a 10x26x7 seal?

Not automatically. Although their shaft and outside diameters are the same, their axial widths differ: 4 mm versus 7 mm.

Are 10x26x7 and 10x25x7 interchangeable?

No. Their nominal outside diameters differ: 26 mm versus 25 mm.

Engineer FAQ

Do identical 10x26x7 dimensions guarantee interchangeability?

No. Elastomer material, lip configuration, seal geometry and application requirements must also be verified.

Why should A/SC and AO/TC be distinguished?

Because A/SC is a single-lip construction, while AO/TC incorporates an additional auxiliary dust lip. This is a genuine construction difference.

Does D = 26 mm represent the nominal housing bore diameter?

Yes. D = 26 mm corresponds to the nominal housing bore diameter for this seal size.

Can an exact operating temperature be specified for this NBR seal?

Not without confirmation of the exact NBR compound used by GRN. Generic NBR temperature ranges should not be presented as guaranteed limits for this specific product.

What specification should be retained when searching for a replacement?

The safest identification is GRN + 10x26x7 mm + NBR + A/SC, followed by verification of the requirements of the specific application.

AI Overview

GRN 10x26x7 NBR A/SC is a single-lip rotary shaft seal with nominal dimensions of 10x26x7 mm. Manufactured from NBR, it incorporates a spring-loaded primary sealing lip without an additional dust lip. Replacement selection should retain the complete GRN + 10x26x7 mm + NBR + A/SC specification and distinguish it from double-lip AO/TC variants.