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DDS Rotary Shaft Seal: 1 Lip w/Spring, SB, Nitrile, 3.5 in ID, 4.5 in OD - Single-Lip Oil Seals with Metal Cases for Smooth Bores
DDSSingle-Lip Oil Seals with Metal Cases for Smooth Bores

DDS Rotary Shaft Seal: 1 Lip w/Spring, SB, Nitrile, 3.5 in ID, 4.5 in OD

The DDS Rotary Shaft Seal is a single-lip oil seal with a metal case, designed for smooth bores. This SB-design seal features a nitrile lip with a spring, and has an inside diameter of 3.5 inches, an outside diameter…

SKU 3G-OTH-123977

Brand
DDS
Item
Rotary Shaft Seal: 1 Lip w/Spring, SB, Nitrile, 3.5 in ID, 4.5 in OD
Category
Single-Lip Oil Seals with Metal Cases for Smooth Bores
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Technical Specifications

DDS
Manufacturer Part Number
88.9114.312.7SB
Type
SB, Nitrile
OD
4.5 in
Wd
0.276 in
ID
3.5 in
Seal Design
SB
System of Measurement
Inch
View Full Spec Sheet

Technical Documents

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DDS Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The DDS Rotary Shaft Seal is a single-lip oil seal with a metal case, designed for smooth bores. This SB-design seal features a nitrile lip with a spring, and has an inside diameter of 3.5 inches, an outside diameter of 4.5 inches, and a width of 0.276 inches (MPN 88.9114.312.7SB). It is an inch-system component from DDS.

Frequently Asked Questions

What is a DDS rotary shaft seal used for?

A DDS rotary shaft seal prevents fluid leakage and contaminant ingress around rotating shafts in industrial equipment such as pumps, gearboxes, and motors. The single-lip nitrile design with spring is suited for oil retention in smooth-bore housings.

What are the specifications of the DDS rotary shaft seal 88.9114.312.7SB?

This DDS SB-design seal has a 3.5-inch inside diameter, 4.5-inch outside diameter, and 0.276-inch width. It features a nitrile lip with a spring and a metal case for smooth bores. The system of measurement is inch, and the manufacturer part number is 88.9114.312.7SB.

Where to buy DDS rotary shaft seals worldwide?

3G Electric supplies DDS rotary shaft seals worldwide. As a global industrial distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us to source the DDS 88.9114.312.7SB or other DDS seal models for your application.

How to install a DDS rotary shaft seal?

Ensure the housing bore is clean and smooth. Lubricate the seal lip and shaft lightly. Press the seal evenly into the bore using a suitable driver that contacts the metal case only, avoiding damage to the nitrile lip. Never hammer directly on the seal.

Used in

Common applications for DDS
Industrial pump shaft sealing — DDS dual-lip TC seals for water and wastewater pumps
Gearbox oil retention — DDS TA seals with reinforced metal cases in smooth bore housings
Compressor crankshaft sealing — DDS single-lip SA seals for moderate pressure applications
Food processing equipment — DDS fluoroelastomer TCN seals for chemical resistance
Conveyor drive motor sealing — DDS SC seals with rubber-enclosed cases for rough bores
Hydraulic power unit sealing — DDS dual-lip TCN seals for high-temperature oil systems

DDS Products

3G Electric supplies DDS single-lip oil seals with metal cases for smooth bores. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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