Roll Neck Seals

A roll neck seal is a large rotary lip seal fitted around a rolling mill neck within the chock assembly. It helps retain bearing lubricant while excluding cooling water, rolling fluid and metal scale, using reinforced construction suited to large diameters and demanding mill environments.

Key facts

Family: Rotary & Mechanical Seals
Common types: Single-lip neck seal, Double-lip neck seal, Fabric-reinforced seal, Split neck seal, Seal with water deflector
Materials: NBR, HNBR, FKM (fluoroelastomer), Fabric-reinforced elastomer, PTFE facing, Stainless steel spring
Used in: Hot strip mills, Cold rolling mills, Wire rod mills, Plate mills, Section mills

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Types

Single-lip neck seal
Double-lip neck seal
Fabric-reinforced seal
Split neck seal
Seal with water deflector

Materials

Applications

Hot strip mills
Cold rolling mills
Wire rod mills
Plate mills
Section mills

What to send for a quote

roll neck diameter
chock bore
groove width and depth
solid or split form
mill fluid conditions

Questions about roll neck seals

What should I send to identify roll neck seals?

Send roll neck diameter, chock bore, groove width and depth, solid or split form, mill fluid conditions. A chock or seal drawing is preferable because large neck seals can include flingers, support heels and several interacting lips. A clear photograph, drawing or readable reference can resolve details that dimensions alone do not show.

How should I select roll neck seals?

Choose reinforcement, lip arrangement and compound from lubricant retention, water spray, scale, shaft movement and installation access. Confirm the mating parts and operating environment before ordering, since an apparently similar size can use a different profile, material or internal arrangement.

Last updated: 2026-10-08