Product Overview
SKC P40021B Inlet Filter and O-Ring Maintenance Kit for Leland Legacy High-Flow Air Sampling Pumps
Condition
Unused NOS in original OEM packaging. Each package contains 5 inlet filters and 1 O-ring. Sourced from a government research facility. Evaluation: Visual inspection only. Function testing not performed.
Ships same business day from Idaho. Packed carefully.
Product Overview
SKC part number P40021B is a replacement inlet filter and O-ring maintenance kit designed for the Leland Legacy portable high-flow air sampling pump (Cat. No. 100-3002). Each kit contains 5 particulate protection filters and 1 sealing O-ring. The filters protect the pump's internal isothermal flow sensor and valves from dust and particulate ingestion. The O-ring maintains a vacuum-tight seal at the inlet, which is critical for accurate flow calibration. This is the "B" variant — the kit that includes the O-ring, as opposed to P40021A (50 filters, no O-ring) or P40021 (QuickTake 30 designation).
Key Features
- Contains 5 inlet protection filters and 1 sealing O-ring per package
- Designed specifically for the SKC Leland Legacy pump (Cat. No. 100-3002)
- Protects internal flow sensor and valves from particulate damage
- O-ring ensures vacuum-tight inlet seal for accurate flow calibration
- Not compatible with low-flow SKC AirChek series pumps
- OEM SKC part — exact fit, no modification required
Applications
- Routine maintenance of Leland Legacy high-flow air sampling pumps
- Occupational exposure monitoring for silica, asbestos, and bioaerosols
- Pre-calibration pump servicing to ensure flow accuracy
- Industrial hygiene and environmental health sampling programs
Frequently Asked Questions
Which pumps is P40021B compatible with?
P40021B is designed for the SKC Leland Legacy portable high-flow pump (Cat. No. 100-3002). It is not compatible with SKC AirChek low-flow personal pumps or other pump lines.
What is the difference between P40021B and P40021A?
P40021B includes 5 filters and 1 O-ring. P40021A includes 50 filters only, with no O-ring. If the O-ring in your pump is degraded, P40021B is required to restore a vacuum-tight seal before calibration.
Are these the sampling media used to collect lab samples?
No. These are internal pump protection filters that guard the flow sensor and valves. The actual sampling media — such as a 37mm cassette — is separate and not included.
What flow rate does the Leland Legacy pump support?
The Leland Legacy pump operates at a flow range of 5 to 15 L/min, confirmed per SKC documentation.
These filters are a scheduled maintenance item. Replacing them before calibration events helps prevent flow faults and protects sensor accuracy across sampling campaigns.
