KomatsuSeals & O-Rings

6631-21-4870 O-Ring — Komatsu

OEM-specification Komatsu O-Ring. Part number 6631-21-4870. Genuine OEM-spec Komatsu aftermarket part.

O-Ring – Part No 6631-21-4870 – Komatsu Spare Part
Part Specifications
BrandKomatsu
CategorySeals & O-Rings
ConditionAftermarket — OEM Specification
DispatchSame-day from Mumbai (before 3 PM IST)
GST InvoiceAvailable — all orders
Export DocsCommercial invoice, packing list, COO
WhatsApp for Price & Availability☎ Call Mumbai Office

Parts Trading Company  ·  Mumbai, Est. 1956  ·  Same-day dispatch  ·  Ships worldwide  ·  GST invoice included

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Installation & Application Notes

Always match seal material to fluid type — NBR for petroleum, FKM (Viton) for high-temperature/chemical applications. Lubricate seals with clean fluid before fitting — never grease. Check shaft surface for scoring — rough surfaces destroy new seals within hours.

Always consult the OEM service manual for model-specific torque values and procedures. WhatsApp our technical team if you need fitment guidance.