Sicoma PA084 Oil Seal 120×160×13 mm – MAO 3000/2000

This oil seal is used on selected SICOMA MAO series twin shaft mixer sealing configurations commonly found in stationary concrete batching plants, including high-output ready-mix and precast production lines, since the sealing stacks can vary by mixer revision. Always confirm fitment using your parts list / exploded view / serial revision before ordering.

Nominal size: 120×160×13 mm (a common listing format is 120-160-13).

• ID (Inner Diameter): 120 mm (shaft sleeve side)
• OD (Outer Diameter): 160 mm (housing bore side)
• Width / Thickness: 13 mm
• Part code: PA084
• Product type: Rotary shaft oil seal (TC)

Quick pre-checks that prevent wrong orders:

• Verify the removed seal marking (PA084 / TC)
• Verify the OD is 160 (not 140) — most common mix-up
• Confirm your mixer revision (BOM/drawing)

The effectiveness of the PA084 seal depends on the elasticity of its lips and the contact pressure they maintain on the running surface. When the sealing edge of the Sicoma PA084 seal wears, hardens or its profile is damaged, several problems can occur:

• The grease barrier is progressively lost and can no longer protect the bearing.

• Water, cement slurry and fine abrasive particles migrate into the bearing area.

• Contamination accelerates bearing wear, causing overheating, increased noise and vibration.

In practice, ignoring a worn Sicoma PA084 seal often leads to a full bearing group overhaul and extended downtime for the SICOMA twin-shaft mixer. Replacing the PA084 oil seal on time with an OEM equivalent Conspar spare part helps protect bearings and shaft sleeves and keeps concrete batching operations running reliably.

• Type: TC (spring-loaded, double-lip oil seal: main sealing lip + auxiliary dust lip)
• Material: NBR (Nitrile Rubber) — commonly used for compatibility with mineral-based greases in bearing housings
• Design intent: main lip supports grease retention; dust lip helps reduce ingress of abrasive fines

Abbreviations:

• TC: double-lip oil seal design (main lip + dust lip)
• NBR: nitrile rubber
• ID / OD: inner/outer diameter

In typical MAO shaft-end assemblies, PA084 is installed at the interface between the rotating shaft sleeve and the stationary housing bore, acting as a primary rotary oil seal element within the bearing support sealing arrangement. Exact stack position can vary by revision—confirm with your BOM/exploded view before ordering.

If you searched Sicoma seal for MAO 3000/2000 shaft sealing groups, PA084 is the TC oil seal identified by code + size + profile.

Hence, use code + dimensions + seal type matters since  a common mix-up is choosing a 120 mm ID seal with the wrong OD occurs. To avoid it, please take a look on below:

• PA084 — TC oil seal — 120×160×13 — ✅ Reference (OD 160, TC double-lip)
• 0228G0001B2 — oil seal (thin) — 120×140×7.5 — ❌ No (OD 140 + width differs)
• PA102 — U-cup seal — 170×180×13 — ❌ No (different type + different diameter)
• PA051 — revision-dependent — ❌ No (don’t assume; verify code + BOM)

Before ordering, please verify:

• the removed seal marking (PA084, TC)
• the dimensions (120×160×13)
• your mixer revision (parts list/drawing)

Depending on your MAO sealing version, PA084 is often sourced together with other Sicoma mixer spare parts from the same shaft-end sealing area (revision-dependent), such as adjacent oil seals, covers, bushings, or intermediate sealing elements.

PA084 is frequently listed in MAO sealing group repair kits together with PA051 / PA102 seals and MOB08 bush (revision-dependent—verify by BOM. So, if you are planning downtime maintenance, request a seal kit/shaft end seal kit/maintenance kit matched to your revision—send a photo or BOM and we’ll match the correct set. (PA084 commonly appears bundled in sealing group repair kits alongside other seals and bushings.)

• Bore preparation: clean, smooth, burr-free housing bore; remove rust and sharp edges
• Pressing: drive the seal in perfectly square; avoid starting at an angle to prevent lip deformation
• Shaft sleeve surface: ensure no burrs that could cut the sealing lip
• Initial lubrication: Apply clean grease to the lip and shaft surface to prevent dry running at start-up

For high-duty mixers, installation should be performed by a qualified technician familiar with SICOMA twin shaft mixer sealing groups.

Lead time guidance:

• If in stock: typical dispatch 3–7 business days
• Made-to-order: typically 4–6 weeks after confirmation/payment
• (Some items may be in transit—confirm current lead time before ordering.)

To quote accurately, send: quantity + delivery country + mixer model + revision/serial (if available) + BOM/photo.

How to order (RFQ in 3 steps):

• Send PA084 + quantity + ship-to country
• Share MAO 3000/2000 + serial/revision + BOM/photo (fitment confirmation)
• Receive a formal offer with lead time and shipping options

Commercial notes: All quotations and proforma invoices for this item are issued in EURO (EUR). Please request a formal offer for current pricing ;)

Legal notice (compatibility & trademarks):

Sicoma is a registered trademark of its respective owner. This spare part is an OEM-equivalent / OEM-quality component supplied by Conspar and is not an original Sicoma-branded product. All references to “Sicoma”, mixer models, and OEM codes are used solely to indicate compatibility and correct fitment within the concrete mixer system.