Shaft Seal 240x270x15 SC FPM/ FKM - Single-Lip Oil Seal

Technical Data & Construction

The shaft seal 240x270x15 mm SC FPM/ FKM is engineered as a premium solution for demanding sealing tasks in machines and drive systems. With inner diameter Ø 240 mm, outer diameter Ø 270 mm, and width 15 mm, this rotary shaft seal features a single-lip design (SC type) tailored for high performance. The sealing lip is made of FPM/ FKM (commonly known as Viton®), a fluoroelastomer renowned for outstanding resistance to oils, greases, aggressive hydrocarbons, and high temperatures. The metal or reinforced outer case ensures a secure fit in the housing, while the single lip maintains a reliable lip-to-shaft contact line. This technical seal meets the needs of industrial applications requiring long service life, minimal leakage and effective sealing even under challenging conditions.

Industrial Applications & Key Benefits

This oil seal is widely used in gearboxes, drives, motors, hydraulic units, compressors and other machinery where a robust rotary seal of large diameter is required. Keywords frequently searched in English by professionals include “shaft seal 240-270-15 FKM”, “single lip oil seal Viton 240x270x15”, “rotary shaft seal FPM 240x270x15”. The single-lip variant ensures lower friction compared with double-lip designs while retaining effective sealing for standard contamination levels. For B2B customers in maintenance, procurement and OEM supply—the advantages are clear: high durability, proven resistance to oils and grease, fewer replacements, simplified logistics for industrial applications and engine seal integration.

Installation, Operation & Maintenance Guidance

For optimal deployment of this shaft sealing ring, ensure that the housing bore and shaft surface are clean, burr-free and within specification. Press the seal evenly into the housing until the outer metal case sits flush — avoid distortion of the elastomer lip. In operation, ensure compatible lubricants and avoid aggressive solvents beyond the FKM’s tolerance. Although the single-lip design is robust, in more severe contamination or high-pressure situations a double-lip oil seal (TC type) may be more appropriate. Regular inspections of shaft condition and lubricant cleanliness will extend the service life and keep your system running with minimal downtime.

FAQ - Frequently Asked Questions

Q1: What is the difference between a single-lip and a double-lip oil seal?
A1: A single-lip oil seal uses one sealing lip (SC type) and is optimal for standard applications with moderate contamination. A double-lip oil seal (TC type) incorporates an additional dust or retention lip for enhanced sealing under heavy contamination or pressure.

Q2: Why choose FPM/ FKM material instead of standard rubber (NBR)?
A2: FPM/ FKM offers significantly higher resistance to oils and grease, superior chemical resistance (hydrocarbons, aromatic solvents), and a broader operating temperature range — this makes it ideal for industrial applications requiring high durability.

Q3: How do I select the correct size for a shaft seal?
A3: Match the inner diameter (Ø240 mm) to the shaft, ensure the outer diameter (Ø270 mm) fits the housing bore, and confirm the width (15 mm) suits the available axial space. Verify tolerances for both bore and shaft before installation.

Q4: Is this seal suitable for automotive and hydraulic applications?
A4: Yes. This large-format rotary shaft seal is suited for heavy industrial drives, hydraulic systems and engine applications where a technical seal with high load-bearing capability and oil resistance is needed.

Q5: Where can I purchase this product and what is the delivery time?
A5: 📍 Warehouse & Store: Lublin, ul. Smoluchowskiego 1, building 4
🚚 24h Delivery - fast order processing tailored for industrial B2B clients.