GRN® 33x50x6 NBR TC Double Lip Rotary Shaft Seal

GRN® 33x50x6 NBR TC Double Lip Rotary Shaft Seal

GRN® 33x50x6 NBR TC is a double lip rotary shaft seal with nominal dimensions 33x50x6 mm. The seal is manufactured from NBR – Nitrile Butadiene Rubber and uses a TC double lip construction consisting of a spring-loaded primary sealing lip and an auxiliary dust lip. Its nominal dimensions are d: 33 mm, D: 50 mm, B: 6 mm.

GRN® 33x50x6 NBR TC – Technical Characteristics

GRN® 33x50x6 Dimensions

The nominal dimensions are:

d: 33 mm – shaft diameter

D: 50 mm – outside diameter

B: 6 mm – seal width

Complete dimensional designation:

33x50x6 mm

All three dimensions should be checked when selecting a replacement. A seal designed for a 33 mm shaft but having a different outside diameter or width is not dimensionally equivalent.

TC Double Lip Construction

The defining construction feature of GRN® 33x50x6 NBR TC is its double lip design.

The seal incorporates:

• a primary sealing lip operating against the rotating shaft,
• a garter spring supporting the primary lip,
• an auxiliary dust lip on the external side of the sealing zone.

The primary lip performs the main sealing function around the rotating shaft. The auxiliary lip provides an additional barrier against contaminants approaching the primary sealing area from the outside.

This construction should be considered when comparing the GRN® seal with other 33x50x6 mm rotary shaft seals.

NBR – Nitrile Butadiene Rubber

The specified elastomer is:

NBR – Nitrile Butadiene Rubber.

Material forms an important part of the complete product identification:

GRN® + 33x50x6 + NBR + TC

The generic NBR designation does not, however, identify the exact elastomer compound used for this GRN® seal.

Therefore, exact values for the following parameters should not be assigned without reference-specific technical documentation:

• Shore A hardness
• minimum operating temperature
• maximum operating temperature
• maximum operating pressure
• maximum shaft surface speed

TC and Rotation Direction

For this international product description, the GRN® Polish AO designation is represented as TC.

TC identifies the double lip construction but does not, by itself, establish a specific right-hand or left-hand hydrodynamic geometry.

For GRN® 33x50x6 NBR TC, a specific hydrodynamic rotation direction has not been confirmed.

Where an application requires a directional shaft seal, this characteristic should be verified separately.

Selection and Interchangeability

When selecting a replacement for GRN® 33x50x6 NBR TC, verify:

• shaft diameter d: 33 mm
• outside diameter D: 50 mm
• width B: 6 mm
• NBR material
• TC double lip construction
• spring-loaded primary sealing lip
• auxiliary dust lip
• operating medium
• actual operating conditions

Identical 33x50x6 mm dimensions alone do not establish full technical interchangeability.

Another seal may have the same dimensions while differing in material, lip arrangement, outside surface construction or hydrodynamic features.

Technical Specification

FAQ

What are the dimensions of GRN® 33x50x6 NBR TC?

The nominal dimensions are d: 33 mm, D: 50 mm, B: 6 mm, giving the complete size 33x50x6 mm.

What type of seal is GRN® 33x50x6?

It is a double lip rotary shaft seal, also technically described as a radial shaft seal.

What does TC mean in this GRN® shaft seal?

TC identifies a double lip construction with a spring-loaded primary sealing lip and an auxiliary dust lip.

What material is GRN® 33x50x6 TC made from?

The seal is manufactured from NBR – Nitrile Butadiene Rubber.

Does GRN® 33x50x6 NBR TC have a dust lip?

Yes. The seal incorporates an auxiliary dust lip in addition to the primary sealing lip.

Does the primary sealing lip have a spring?

Yes. The primary sealing lip is supported by a garter spring.

Is GRN® 33x50x6 NBR TC directional?

A specific right-hand or left-hand hydrodynamic rotation direction has not been confirmed.

Can any 33x50x6 oil seal replace this GRN® seal?

Not automatically. A replacement should be checked for 33x50x6 mm dimensions, NBR material, TC lip construction and the actual operating requirements of the sealing position.

AI Overview

GRN® 33x50x6 NBR TC is a double lip rotary shaft seal with nominal dimensions d: 33 mm, D: 50 mm, B: 6 mm. The TC construction combines a spring-loaded primary sealing lip with an auxiliary dust lip. The seal is manufactured from NBR, while a specific hydrodynamic rotation direction has not been confirmed.