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DDS Single-Lip Oil Seal with Metal Case - Single-Lip Oil Seals with Metal Cases for Smooth Bores
DDSSingle-Lip Oil Seals with Metal Cases for Smooth Bores

DDS Single-Lip Oil Seal with Metal Case

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

Also listed as: 8891143127SB · 88 9114 312 7SB · 88-9114-312-7SB

Brand
DDS
Item
Single-Lip Oil Seal with Metal Case
Part Number
88.9114.312.7SB
Category
Single-Lip Oil Seals with Metal Cases for Smooth Bores
Available to Order
Also known as:88.9114.312.7SBDDS
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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

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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
Pump shaft sealing — DDS dual-lip TC-type seals in nitrile or fluoro for rough bore housings
Gearbox input and output shafts — DDS TF-type spring-loaded seals to retain lubricant and exclude dust
Electric motor bearing housings — DDS single-lip or dual-lip seals sized by shaft and bore dimensions
Rotating equipment maintenance — DDS oil seals identified by MPN or measured ID, OD, and width for replacement
Process industry mixers and agitators — DDS fluoro seals for chemical and temperature resistance
Mobile and off-highway drivetrains — DDS nitrile seals for moderate-temperature grease and oil retention
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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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This single-lip oil seal features a metal case for installation in smooth bores. The nitrile lip with spring provides effective sealing in rotating shaft applications such as gearboxes, pumps, and motors. It has a 52 mm inner diameter, 68 mm outer diameter, 8 mm width, and a maximum pressure rating of 7 psi
DDS
This single-lip oil seal features a metal case for installation in smooth bores. The nitrile lip with spring provides effective sealing in rotating shaft applications such as gearboxes, pumps, and motors. It has a 52 mm inner diameter, 68 mm outer diameter, 8 mm width, and a maximum pressure rating of 7 psi

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