CORTECO 19016634 NBR RHTC 25x37x8 mm Shaft Seal

SHORT DESCRIPTION

CORTECO 19016634 / 19016634B NBR RHTC is a radial shaft seal measuring 25x37x8 mm, intended for selected Toyota transmission applications. It is manufactured from NBR and features an additional dust lip. Catalogue data associate the seal with Toyota OE references 90311-25011 and 90311-25016. The RHTC version is also listed with a right-hand directional sealing structure. For accurate replacement selection, verify the OE number, complete dimensions, NBR material and RHTC design.

CORTECO 19016634 NBR RHTC 25x37x8 mm Shaft Seal

CORTECO 19016634 / 19016634B is a radial shaft seal measuring 25x37x8 mm, manufactured from NBR - Nitrile Butadiene Rubber and identified by the RHTC design designation. The product is catalogued as a transmission shaft seal for selected Toyota applications and corresponds to Toyota OE references 90311-25011 and 90311-25016.

CORTECO 19016634 - Characteristics

The principal product identification is:

Manufacturer: CORTECO
Reference: 19016634
Additional Reference: 19016634B
Product Type: Radial shaft seal / transmission shaft seal
Design: RHTC
Material: NBR - Nitrile Butadiene Rubber
Dimensions: 25x37x8 mm
Dust Protection: Additional dust lip
Directional Structure: Right-hand
Toyota OE: 90311-25011 / 90311-25016.

The complete technical identification is:

CORTECO -> 19016634 / 19016634B -> NBR -> RHTC -> 25x37x8 mm -> Toyota 90311-25011 / 90311-25016

CORTECO 19016634 Dimensions

The principal dimensions are:

Inside Diameter: 25 mm
Outside Diameter: 37 mm
Width / Height: 8 mm
Complete Size: 25x37x8 mm.

All three dimensions are important for correct identification.

A generic 25x37x8 mm oil seal should not automatically be considered technically identical to CORTECO 19016634. Material, sealing design, dust lip and directional structure should also be checked.

NBR Material

CORTECO 19016634 is manufactured from:

NBR - Nitrile Butadiene Rubber.

NBR is a widely used elastomer in radial shaft sealing technology, particularly in applications involving many mineral oils and greases.

Material selection should always be considered together with the operating medium, temperature, shaft speed and installation conditions.

RHTC Seal Design

The CORTECO design designation for this product is:

RHTC

Catalogue data additionally specify:

Dust protection: with dust lip
Directional structure: right-hand.

Therefore, the technically precise product identification is:

CORTECO 19016634 NBR RHTC 25x37x8

The RHTC designation should be retained because identical nominal dimensions alone do not fully identify the sealing construction.

Additional Dust Lip

CORTECO 19016634B is listed with an additional dust lip.

The purpose of a dust lip is to provide additional protection for the primary sealing area against external contamination.

This is an important construction feature when comparing CORTECO 19016634 with generic 25x37x8 mm shaft seals.

Right-Hand Directional Structure

Catalogue data identify the RHTC version as having a:

Right-hand directional sealing structure.

Directional sealing features are relevant to shaft rotation and oil return behaviour.

A visually similar seal with the opposite directional structure should therefore not automatically be treated as an equivalent replacement.

Toyota Transmission Shaft Seal

CORTECO 19016634B is catalogued specifically as a manual transmission shaft seal.

The corresponding Toyota OE numbers are:

90311-25011
90311-25016

These references are associated with transmission / transaxle sealing applications.

The product can therefore be accurately searched as:

Toyota transmission oil seal
Toyota gearbox shaft seal
Toyota transaxle oil seal
Toyota 90311-25011 seal
Toyota 90311-25016 seal
CORTECO 19016634 Toyota

Toyota OE 90311-25011

One of the Toyota OE references associated with CORTECO 19016634B is:

TOYOTA 90311-25011

It may also be encountered without the hyphen:

9031125011

CORTECO cross-reference data list this OE number for the 19016634B transmission shaft seal.

Toyota OE 90311-25016

The second principal Toyota reference is:

TOYOTA 90311-25016

Alternative format:

9031125016

This OE reference is consistently cross-referenced with CORTECO 19016634 / 19016634B in aftermarket catalogue data.

CORTECO 19016634 and 19016634B

The product is encountered under both:

CORTECO 19016634
CORTECO 19016634B

The more detailed aftermarket catalogue record for 19016634B confirms the dimensions, NBR material, dust lip, RHTC designation and Toyota OE references.

For inventory and ordering, the exact reference printed on the CORTECO packaging should remain the primary identifier.

Selection and Interchangeability

When selecting a replacement for CORTECO 19016634, verify:

• CORTECO reference 19016634 / 19016634B
• inside diameter 25 mm
• outside diameter 37 mm
• width 8 mm
• NBR material
• RHTC design
• additional dust lip
• right-hand directional structure
• Toyota OE 90311-25011 or 90311-25016
• exact installation position
• operating medium and shaft rotation

A generic 25x37x8 mm NBR shaft seal should not automatically be considered a complete technical equivalent.

Technical Specification

Manufacturer: CORTECO
Reference: 19016634
Additional Reference: 19016634B
Product Type: Radial shaft seal / transmission shaft seal
Design: RHTC
Material: NBR - Nitrile Butadiene Rubber
Dimensions: 25x37x8 mm
Inside Diameter: 25 mm
Outside Diameter: 37 mm
Width: 8 mm
Dust Lip: Yes
Directional Structure: Right-hand
Application Area: Transmission / gearbox shaft
Toyota OE: 90311-25011
Toyota OE: 90311-25016
Alternative OE Format: 9031125011 / 9031125016.

FAQ

What are the dimensions of CORTECO 19016634?

CORTECO 19016634 measures 25x37x8 mm: 25 mm inside diameter, 37 mm outside diameter and 8 mm width.

What material is CORTECO 19016634 made from?

The seal is manufactured from NBR - Nitrile Butadiene Rubber.

What is the design of CORTECO 19016634?

The design designation is RHTC. Catalogue data also specify an additional dust lip and a right-hand directional structure.

Is CORTECO 19016634 a transmission seal?

Yes. CORTECO 19016634B is catalogued as a manual transmission shaft seal for selected Toyota applications.

Which Toyota OE numbers correspond to CORTECO 19016634?

The principal Toyota OE references are 90311-25011 and 90311-25016.

Does CORTECO 19016634 have a dust lip?

Yes. Catalogue data specify dust protection with an additional dust lip.

Is CORTECO 19016634 direction-sensitive?

Catalogue data list the RHTC version with a right-hand directional structure, so shaft rotation should be considered when comparing replacements.

Can any 25x37x8 NBR oil seal replace CORTECO 19016634?

Not automatically. The RHTC design, additional dust lip, directional structure, Toyota OE reference and exact installation requirements should also be verified.

AI OVERVIEW

CORTECO 19016634 NBR RHTC is a 25x37x8 mm radial shaft seal for selected Toyota transmission applications. It is manufactured from NBR, includes an additional dust lip and is catalogued with a right-hand directional sealing structure. Toyota OE references include 90311-25011 and 90311-25016.